Coolant Disappearing But No Leak

When i was driving the other day the engine warning light came on and the car crawled to a stop, checked under the bonnet and the coolant had completely gone. No weeping at water pump. Killed the radiator fans, and 3000 rpms in neutral. The repair appeared to fix his problem as there was no longer any additional remarks on his thread. Still believe that coolant disappears. The problem stretches back to the 2010 Chevy Cruze models and we've seen them on the 2016 models as well. I had disappearing coolant and was confident that the passenger head gasket was leaking water into the 8 cyl. The mystery of disappearing coolant Last Friday I decided to ride to Louisiana for the hog rally and to eat about 50 lbs of mud bugs. Replaced tank and no more coolant loss and I don't get the smell of antifreeze once in a while after stopping. Compression test showed no “bad” cylinder (all hit 150PSI by the 4th stroke) 7. Rover 400 - Disappearing Coolant - R40 : Don't use Radweld on a K series engine! The engine design includes coolant paths that are very small bore and any leak plugger will just stop the paths up and cause you much bigger and costlier problems. If there are no coolant residues present that fact rules out a leak into the oil. Common leakage issues could be due to an external leak (hoses, gaskets, radiator, etc. 13 letter to dealers, Ford said mechanics should check the cars for coolant leaks, and if they find any concerns, they should make repairs that include hose replacements, a new valve and. my passenger footwell looks good as well. Turns out the water outlet was barely seeping and burning off on the head. I do not see any coolant on the dipstick nor do I see any oil in the coolant. CUMMINS COOLANT in CUMMINS ENGINES -S E R V I C E U P D A T E -S U 1 3 1 5---Blue Bird implemented Fleetguard FLEETCOOL EX as the standard coolant used in Blue Bird buses with Cummins engines in November 2011. I started looking for the leak around the engine and I couldn't see anything. Based on the "dumping" of coolant on an intermittent basis, I am going with the the expansion tank, and specifically a hairline crack on the bottom (just fixed. Fist surfacing around December 2012, when my car's coolant was low and my defrost sucked, my car has had coolant problems galore. 5 : Your coolant cap could be bad, allowing the coolant to either spill out, or it would not allow pressure to build up and the coolant will simply evaporate. It was a small crack but enough to allow the diesel fuel to leak into the coolant that circulates around the head. I have a smell of collant in exhaust fumes, and I just had a cylinder #6 misfire code. I had disappearing coolant and was confident that the passenger head gasket was leaking water into the 8 cyl. Cant drive due to overheating. Then after a couple of days the heat. Her coolant would be low by morning (more and more required every day), overflow bottle always full and puking over, overheating, excessive system pressure and no leaks. coolant disappearing without any trace on the road, except when taking the belly pan off the car. Heater core, head gasket, water pump. The first thing to do would be to check the oil and see if it looks like chocolate milk. they didnt find any leak either. Bulletin No. If you are sure that you are losing coolant, that it is not simply a matter of a fluctuation of the level in the overflow tank, and you c. Call it antifreeze, a coolant, or even radiator fluid; the purpose is to maintain the engine’s cool. Once the car was returned I re­checked the coolant level and it was below the minimum mark. Fortunately, there are a relatively small number of possible causes. SOVLED Intermittent coolant leak ONLY when engine hot SOLVED - it was a I believe a small hole in the bottom right (facing engine bay) hose found when revving the engine when warm. I had been just refilling the coolant, but more recently the leak started to get much worse to where I was refilling coolant weekly. Hopefully someone can shed some light on this. So I fill it up, go for a ride through town, stop to check it when I get back and it's almost empty again. In my case, wet coolant was being pushed out the exhaust pipe. exhaust looks good, plugs look good. When it does occur, however, one of the following symptoms is usually the cause: a cold system with gases trapped in a cold thermostat, or disappearing coolant with no apparent leakage. Such a small leak that the water evaporates/boils off before there are any tell-tale drips on the ground. But small external coolant leaks often burn off the engine, which usually can be smelled by somebody with a good nose (so no drips). This often happens when. Look out for signs of coolant creeping through tiny gaps. Head gasket is the main suspect. There is no leaks what so ever at all only leakage had happened when we were bleeding the system and the overflow tank line let some of the coolant out. I currently have coolant fluid leaking from a recessed bolt of some sort on the driver side on my cylinder head on my 2008 Mazda 3i 2. About 6 days later about 80 miles since last top up, it was on again. The most common cause for "disappearing" coolant comes from the engine heads. If i drive for about 75 miles or so the coolant is way low. 04-13-2006, 11:54 PM. Coolant levels hasnt changed. So I fill it up, go for a ride through town, stop to check it when I get back and it's almost empty again. I have a 2002 mini cooper. 4 : Bad lines, leaking in places you can't easily see. I have had it to my mechanic twice and they cannot find a damn thing. All I know is my coolant was disappearing at an alarming rate and after the water pump was replaced no issues for months now. Coolant was still slowly disappearing but at a much slower pace. I chased a coolant leak for a year in a '97 Camry. until the day it almost blew upbut since I had brought it multiple times for exhaust, heavy smoke, in addition to low engine coolant, at. Brad-P · Registered. I noticed a suspicious looking black stain on the floor mat on the driver's side under the gas pedal. After a few days of driving, park your car in a dark garage and use a UV flashlight to search for evidence of your coolant leak around your engine bay and under your engine. only conclusion I have is head gasket maybe making a plug misfire pulling plugs today. Possible signs of head gasket failure include. No, you can check the coolant level at the recovery bottle as refference only. This could either cause coolant to push out past the reservoir overflow tube or actually ingested by the motor. Pressure in system prob blew the first rad. I just had a leaking thermostat housing that was very small and would evaporate off the engine so I never saw a spot on the drive. An internal leak is within the engine and is harder to diagnose and no coolant leaks are noticed - the coolant just Usually an internal leak is a "blown" head gasket and the coolant is leaking into the cylinders or into the oil pan. 5 : Your coolant cap could be bad, allowing the coolant to either spill out, or it would not allow pressure to build up and the coolant will simply evaporate. Coolant is clean and tests fine. There is no oil in the coolant or vice versa. Thus, you can have a bad gasket and no loss of oil and no oil in the coolant, but loss of coolant through the exhaust. So , what could be the problem ? Hope you. There is no water in the oil so it is not disappearing there. I've been having one heck of a coolant leak issue the past couple weeks. 7LStrong coolant odor coming from the engine compartment and it appears that the coolant has been sprayed all over the place. The most recently reported issues are listed below. I filled the coolant reservoir and ran the car for a good 15-20 min. Disappearing coolant? Jump to If there are no visible leaks check engine oil for contamination or if it's overfilled it could be leaking into the oil. I never smell hot coolant, either. Problem is: The car has been loosing coolant since I've had it. Either the head gasket or intake gasket, maby even a possible cracked head, but if it was the head there would be other issues unless it was a very, very fine crack, I hope not. once you have made sure that theres no smoke and no oil and coolant mixing either in engine oil or radiator then a hot day start it with ac running and check for leaks, go through all the hoses bottom of radiator and heater core as well. i have NO. This allows for the exchange of heat between the two systems. If the car has recently overheated then this could have caused the head gasket to fail. There was some coolant on the floor under the machine (about 1/3 of a qt. I was thinking it was a freeze plug of sorts but it is threaded with a hex head. Periodically have the oil analyzed by Blackstone, perfect results everytime. I had a tank that had 3 or 4 cracks in it and would lose about 16oz between oil changes but it never showed a drop on the ground. I have done all the maintenance. I first noticed it before the 1st oil change at around 4500 miles- the coolant was at min level. Jump to Latest Follow 1 - 11 of 11 Posts no other leaks, no coolant in the oil or vice versa, no white smoke, nothing peculiar, just disappearing coolant, being pushed out as I drove under load. Pull the 3/8 line off at the surge tank. It closes up again when it's cold and doesn't leak. I have 1990 Mustang GT. A small head gasket leak or cracked cylinder head might exhibit no other symptoms except coolant loss. I need to refill the coolant container every 30 miles or so because the light for "add coolant" goes on. So far I have done the following: used a leak down pressure tester that shows I have a leak; looked under car for leak and didn't find one, put UV test fluid in radiator, doesn't show any external leaks and doesn't detect any coolant in exhaust; there is not coolant. shop r/r gasket, timing chain, coolant gasket areas, and noted that there was pitting in the coolant area on the timing. The last sign of a blown head gasket with an internal leak is to look for the presence of exhaust gas in your coolant. Dealer found nothing wrong and topped off. His dealer found " coolant pipe assembly at BACK OF BLOCK 8. If not, find out where the line from the hollow bolt is plugged. A more mysterious coolant loss problem involves no evidence at all of leaks or puddles, yet shows a definite reduction in radiator coolant levels. The heater core is brand new,but ya never know. Coolant pipe slow leak might be easier to spot. E82 / E87 / E88 / F20 1 Series (2008 - 2014). i will drive it then part. Found system pushing coolant out of overflow hose like a garden hose. So, the mystery continues. When I turned the key the coolant level warning was beeping and flashing and sure enough the level was right down in the reservoir. Still, I swapped caps and went for a 7-8km drive at various speeds and with a couple of stops in between. If your coolant system overpressurizes, you may have some serious problems with that engine. * Everyday i have to put about 1 liter water in radiator. I can only think there is a restricition in the system causing the backup. my passenger footwell looks good as well. The oil looks all black and fine too. About 2000km later it overheated again. I'm losing about 1 quart for every 500 miles. The heater core is brand new,but ya never know. I reckon head gasket gone. this time but still only an inch below full line if that. If it is a tiny leak. There was no milky oil or sweet smell on the dipstick. Either the head gasket or intake gasket, maby even a possible cracked head, but if it was the head there would be other issues unless it was a very, very fine crack, I hope not. coolant through the head gasket and burned the the white smoke 3. 2000 Chevy Cavalier Coolant Leak No One Can Find. Cadillac Overheating Coolant disappearing no leak visible 3 Answers. Internal coolant leaks are dangerous because it is not possible to see where the leak is coming from. I currently have coolant fluid leaking from a recessed bolt of some sort on the driver side on my cylinder head on my 2008 Mazda 3i 2. Killed the radiator fans, and 3000 rpms in neutral. Engine - Coolant Loss With No Visible Leaks. A more mysterious coolant loss problem involves no evidence at all of leaks or puddles, yet shows a definite reduction in radiator coolant levels. If there is a hole in between your combustion chamber and the cooling jacket in your head gasket, each time the piston pushes exhaust gas out of the combustion chamber into the exhaust system some exhaust gas will also be. The gasket seals the cooling system keeping pressurized coolant in the closed loop system. 7 (280,000 km) with a new used lowish km engine installed almost a year ago. 2017 Chrysler 300 Limited/Bentley Mulsanne styling. King Dj-Slim 21,706 views. I have taken to keeping a 2l bottle of tap water in the boot in case i need to top up when i'm out and about. The chances are your head is cracked - normally at no 1 cylinder. coolant through the head gasket and burned the the white smoke 3. The oil looks all black and fine too. Of course a leak is a possibility and should be checked out as other respondents suggest. they didnt find any leak either. After the leak down test, leave that pressure guage screwed onto the radiator and run the motor until the thermostat opens up. 0L Power Stroke Diesel - Disappearing antifreeze in 6. * No visible leaks. This works for short drives, but I've noticed my coolant is disappearing quickly. I can't find any coolant leaks, and I don't believe the engine is consuming any coolant. Friend told me it might be leaking through the head gasket. 6-liter four-cylinder engines that could have an engine coolant leak. Start the engine again. I will add Castrol GTX synthetic. A poorly maintained antifreeze system, defective components, or a rapid change is the driving style may contribute to this coolant disappearing. The Fix: Repair or replace the oil cooler. only conclusion I have is head gasket maybe making a plug misfire pulling plugs today. No antifreeze smell in the exhaust or white smoke. Cummins Fleetguard FLEETCOOL EX is an ethylene glycol premix 50/50 coolant which is pink in color. I spent about 30 minutes tearing the plastic cladding off the bottom of the car (there's a billion clips and screws holding those on) hoping to find some trace of a leak or blowout. Finally had a monster leak after doing a coolant flush-and-replace. I pulled the plastics and checked the hoses/clamps, ran the bike to operating temp and shut her down. To those who are car illiterate, the words "blown head gasket" might not sound so bad. 8 liter engine, coolant leaks are most likely to occur where the hoses connect to the engine, but it can also leak from the reservoir or from the hoses. Even sitting/idling or at rest I can't find any drips on the ground. There is no oil in the coolant or vice versa. An external leak is the type of leak which is most easily diagnosed. its not in the oil, its not on the ground. there is a dye that you can put into the system, run the engine for a few minutes, and then using a black light you can track down the leak. When you fill it higher than 2", then it will have a tendency to blow some out the coolant out the overflow bottle vent (at least mine does). Worse case bad head gasket/cracked block. 04-13-2006, 11:54 PM. I am going away up north in 2 weeks - 150 mile journey and there is no way that this car will cope with this if I can't even get 15 miles into work without engine coolant disappearing. Went out to the garage to take the sled out for a ride yesterday and when I was filling the oil I noticed that there was no coolant in the coolant tank. Old coolant loses its corrosion-inhibiting properties, allowing. If coolant is disappearing and not leaking out, that only leaves one possible explanation: Being consumed inside your engine. 0 (its actually an 87 engine) is mysteriously leaking coolant. Luckily this happened during the 5yr/60K power train warranty. 9 Cummins 12 valve. The connection clips can be a pain as they tend to break or need tightening every so often. I can’t visibly see a leak. or internally due to a leaking head gasket and sometimes a leaking intake manifold gasket depending on the engine design. I have a 2010 cc sport and a few days ago the check coolant light came on so and i checked it and it was completely empty so i bought coolant, filled it up and after 1 mile of driving the light came back on and it was empty again so filled it up again. Only when you begin driving the car, it does not boil, no steam comes out, the reading just spikes VERY high, luckily i never let it get even close to red. Hopefully, it's not an internal leak. 2/9/18 - dealer performs recall 17s09 vehicle brought back again as coolant is dropping. Had it pressure tested small loss of pressure but no leaks found, sniffer test done that was all clear. A coolant recovery tank is ment to collect the expanding coolant as it is forced from the radiator, then as the engine / radiator cool a vacuum is created to suck the coolant from the recovery tank back into the radiator. Approx 30k on conversion, runs great. There are no visible leaks anywhere from the radiator or anywhere else. The head gasket on my Scirocco let go rather suddenly about a year ago, no water in the oil, no oil in the water, just a failure between one of the coolant passages and a "fire ring" with the fire ring apparently acting as a check valve. I had the exact same problem (2001 Passat 1. its not in the oil, its not on the ground. Average repair cost is $430 at 68,750 miles. If its burning coolant then its possible for the antipollution light to come up - if there is no sgns of external leaks from under the car or even damp areas within the footwells caused by fault matrix. that was from bmw specialist (yes i know bmw) They said up to me but just keep topping coolant up see if get worse. Coolant is leaking off instantly from the radiator, no matter if its aftermarket or stock radiator so it got to be the hoses or something else. Mines Blue! But got the same coolant leak problems. And the next day it's empty again. No wet spots bike is always garage parked even at work. If the pump leaks you should have a pudle on the ground though, but just the same look around it and under it to see if you have a trail, also look at the housing behind the Alt. It was a small crack but enough to allow the diesel fuel to leak into the coolant that circulates around the head. There was some coolant on the floor under the machine (about 1/3 of a qt. I cannot see the leak and the vehicle does not overheat. either slightly warm or at full rest. The fluid evaporates on the hot surface leaving literally no trace of the leak. :rant: I bought a 94 Sonoma 2. If you're loosing a significant amount and no signs of leaks then it's internal and likely a headgasket. I am losing coolant on a daily basis with no visible leaks, no smoke, or wet spots. The only warning I got before it overheated was a lot of "white smoke" (steam, actually) out the tailpipe. 0L Turbo Powertrain (EJ Series Factory 2. The coolant can't just disappear, it is either leaking to the outside or into the engine. I looked over the next few days for any signs of a leak and there were no signs. exhaust looks good, plugs look good. Compression test showed no “bad” cylinder (all hit 150PSI by the 4th stroke) 7. No >>> This bulletin does not apply. The customer picked up the car and drove home. Hopefully, it's not an internal leak. cognito Secret Agent Member Supporting Member Dec 28, 2005. Had the disappearing coolant diagnosed as a water pump leak. Last week I had ridden it and the coolant tank was full. Rover 400 - Disappearing Coolant - R40 : Don't use Radweld on a K series engine! The engine design includes coolant paths that are very small bore and any leak plugger will just stop the paths up and cause you much bigger and costlier problems. SOVLED Intermittent coolant leak ONLY when engine hot SOLVED - it was a I believe a small hole in the bottom right (facing engine bay) hose found when revving the engine when warm. Anyways, use water, fill it up to the full line and run it for a week or so then check it. I have a 2008ZO6 with no visible coolant leak. look for obvious leaks on hoses and the radiator tanks, then I inspect the. This works for short drives, but I've noticed my coolant is disappearing quickly. 3 - External Leak. Only when you begin driving the car, it does not boil, no steam comes out, the reading just spikes VERY high, luckily i never let it get even close to red. If your coolant system overpressurizes, you may have some serious problems with that engine. I had the exact same problem (2001 Passat 1. PROBLEM: the coolant is disappearing. One of the three-way fittings had a bad weld that would only leak when the apu was running. Coolant pipe slow leak might be easier to spot. its not in the oil, its not on the ground. 7 (280,000 km) with a new used lowish km engine installed almost a year ago. There was no milky oil or sweet smell on the dipstick. Based on the "dumping" of coolant on an intermittent basis, I am going with the the expansion tank, and specifically a hairline crack on the bottom (just fixed. coolant disappearing without any trace on the road, except when taking the belly pan off the car. As the air comes out you add more coolant to keep the tank level steady. The coolant evaporates in the exhaust so you won't see it. Any suggestions as to where to start looking. Hopefully, it's not an internal leak. Sometimes a leak in the oil line inside this chamber can cause oil to leach into your cooling system. Mine turned out to be a cracked head. Coolant loss is a cause for concern, but many live with it as "just one of those things" and are quite happy to check and top the system up regularly. I had to go out so Ive topped. also check for white smoke coming out of the tailpipe but not to be confused with condensation on cold startup check under load after reaching operating temperature. If the leak is very small it could take a long time to see any leakage (check everywhere). exhaust looks good, plugs look good. If you suspect a coolant leak, visually inspect all of the hoses, the water pump, the reservoir, and the radiator for seepage or the 'weeping' of coolant out of seams and gaskets. After warming up and cooling down the engine a few times, add coolant to the. * No overheating or white smoke issue. I kept loosing coolant also and couldn't nail down the problem. Thought that it was a cracked supercharger intercooler and had that replaced but still occasionally 'missing' supercharger coolant. I first noticed it before the 1st oil change at around 4500 miles- the coolant was at min level. I just put about a half a gallon in it in about 4000 miles. OK this is a GM LS1 type engine (gen III) LQ4 LQ9. A year or more ago I had a parking accident and put a crack in the radiator of my GC8 WRX. doesn't explain the missing coolant though, so I would be looking at plugging in an elm 327, and connecting to your phone and monitor coolant temp to confirm. Periodically have the oil analyzed by Blackstone, perfect results everytime. No sludge in coolant - just drained all the old stuff before replacing the hoses. I'm losing about 1 quart for every 500 miles. 3 SCLB 4x4 Off-Road SRW - DP Tuner, Tymar intake, 35" BFG Mudders on 16x10 Mickey T's, Superlift 6" lift, DiPricol 3 gauge Pillar, 4" SS DP to 5" sidepipe to 6. If you use a stop-leak product, you will also need a coolant flush to remove excess stop-leak. No, you can check the coolant level at the recovery bottle as refference only. Plenty of coolant in the bottle still. Had it pressure tested small loss of pressure but no leaks found, sniffer test done that was all clear. Refill and properly burp the coolant. Bulletin No. No pressure loss in the coolant system, so there goes leak in the coolant system. Added coolant to both the radiator and the reservoir respectivelycoolant disappeared completely within a day or two. It's been pressure checked hot and cold,no leaks to be found. There's no coolant leaking into the cab from the heater core and it never shows a higher temp than normal on the guage. coolant is disappearing My son is having same issue but now it is including a drop of oil level. Disappearing coolant? Jump to If there are no visible leaks check engine oil for contamination or if it's overfilled it could be leaking into the oil. The mystery of disappearing coolant Last Friday I decided to ride to Louisiana for the hog rally and to eat about 50 lbs of mud bugs. I started looking for the leak around the engine and I couldn't see anything. The fittings used on the turbo coolant lines have o rings that I believe overtime the heat causes damage and then leaking and most have experienced this around the 50k - 60k mile mark. I can't find any cracks in the hoses or rusty connectors or anything that looks like it might be the source of a loss of fluid. There are no visible leaks anywhere from the radiator or anywhere else. Mine does the same thing, I loose coolant but have no leaks and can't find where it is going. * My car is holden statesman WL 2005 LS1 V8. Hose connection leaks are due to insufficiently tightened clamps. I really am lost, but I can smell the coolant and so can others while in my car. Rover 400 - Disappearing Coolant - R40 : Don't use Radweld on a K series engine! The engine design includes coolant paths that are very small bore and any leak plugger will just stop the paths up and cause you much bigger and costlier problems. Once replaced/complete and both new hose/clamps are set, start vehicle to idle and run heater full blast for 3-4 min. the disappearing coolant may be leaking from the little drain hole in the water pump housing. 5 is an open deck block, it will leak into the combustion chamber. No drips on the ground, no white smoke at startup, no visible leaks in engine bay, no overheating at all. So I noticed my coolant low one day. OK, I have had fifty years of experience as a gear head working on cars and building high performance motors. Start the engine again. No wet spots bike is always garage parked even at work. I was thinking it was a freeze plug of sorts but it is threaded with a hex head. Took it back to the collision shop and they did a pressure check and said there was no leaks. No, we're not talking about the '60s-era, big-block and Hemi-powered Dodge Charger from the 1960s, or even the wild, fuselage-styled early '70s cars. Dealer found nothing wrong and topped off. I'm back, already! Seems like all i have is problems with this dang truck. 9 Cummins 12 valve. The heater core is brand new,but ya never know. When I have a small coolant leak or coolant loss on a car like this Honda Civic, the first things I always check is. i have no idea where its going but it seems to lose about an inch (in the reservoir) a day. Disappearing coolant - the bane of my existance XJ / MJ Cherokee. If it is a tiny leak. Engine - Coolant Loss With No Visible Leaks. Turns out the water outlet was barely seeping and burning off on the head. Tomorrow they are supposed to do some sort of evaluation. Cold Coolant + Closed Thermostat. Sometimes a leak in the oil line inside this chamber can cause oil to leach into your cooling system. W124 mystery coolant leak Hi folks, Since the head replacement there has been a small coolant leak which eludes me, the obvious sources given the work have been checked and ruled out. How can I further diagnose my coolant leak? Answer. I don’t get 25 miles from home before I notice the engine light and coolant light both lit up on the dash. I have 1990 Mustang GT. There was no milky oil or sweet smell on the dipstick. Get yourself a new radiator. After the leak down test, leave that pressure guage screwed onto the radiator and run the motor until the thermostat opens up. Suspected thermost, replaced it. Solving The Mystery Behind Coolant Disappearing From Reservoir With No Potential Leaks. The combustion ring could be blown, and as the 2. Head gasket is the main suspect. Still believe that coolant disappears. No antifreeze smell in the exhaust or white smoke. I hope this helps others with disappearing coolant ! :wave:. There is no leaks what so ever at all only leakage had happened when we were bleeding the system and the overflow tank line let some of the coolant out. External leaks are easy to diagnose because the coolant often escapes the car and creates. There are no visible leaks anywhere from the radiator or anywhere else. No leak anywhere. Naturally I filled it back up. Turns out the water outlet was barely seeping and burning off on the head. If you have ever found your vehicle missing coolant with no visible leak on the ground or on or around your cooling system, the problem could be a worn out radiator cap, which allows coolant to actually escape while you're driving. First, if you only look after it has disappeared, there is no coolant left to be leaking Second, coolant will often leak only under pressure, when it expands from being hot. I just had to fix a fuel leak on a 2000 Friday and his housing was leaking, but not enough too make a pudle. I changed the oil right when I bought the truck, and it's black like it should be. Losing Coolant But No Leak: Where Is My Coolant Going? It may sound ghostly if you think of coolant loss, no visible leak. Then a head check, this is a chemical test to check for exhaust gasses in the cooling system. Chevrolet Silverado 1999-2006: How to Do Coolant Pressure Test and Repair Radiator Leak. R getting into combustion chambers. 1,250 miles later doing a quick check and coolant level down maybe 1. Roughly 28k miles. I can see no leaking coolant, the radiator was replaced about 9 months ago. Any suggestions as to where to start looking. While most leaks are obvious, there are often times you may feel your coolant is simply disappearing. its a very slow leak. Tested for CO in coolant - negative. 2 gallons in one day is substantial problem. If the pressure leaks down and there is no external evidence then the leak is internal to the engine as in a blown head gasket. There is almost no coolant in the reservoir, it was below the full mark. Check for coolant in the oil, since failed LIM gaskets can put coolant into parts of the engine where it doesn't belong. I have searched and search but cant seem to find any reference to this "plug". They are known for mystery leaks of coolant. No, I did not notice any 'milkshake' on the underside of the oil filler cap. A more mysterious coolant loss problem involves no evidence at all of leaks or puddles, yet shows a definite reduction in radiator coolant levels. Replacing hose, thermostat and packing. You may not notice the difference at first, thinking that your tank is full. No drips on the ground, no white smoke at startup, no visible leaks in engine bay, no overheating at all. I had a similar problem. Please also check out the statistics and reliability analysis of the 2015 Ford Fusion based on all problems reported for the 2015 Fusion. However, I have had ongoing issues with vapor coming out of the vents whether the AC is turned on or off with an awful chemical smell. Wow, you guys are fast!! First, the truck is a 2000 model with about 85,000 on it. There was no milky oil or sweet smell on the dipstick. 0L Power Stroke Diesel - Disappearing antifreeze in 6. I have replaced the reservoir cap, the water pump, and a week and a half ago, the head gasket. 3s and both have magical disappearing engine coolant. I have had to refill a whole gallon of coolant within a week. * My car is holden statesman WL 2005 LS1 V8. Truck was running HOT coming home one day, and I saw I was low on coolant. If it has two hoses that branch off it and run to the oil filter housing you have an external oil cooler that is bad and letting oil into the coolant. 5 gallons in the past 2 days. When it does occur, however, one of the following symptoms is usually the cause: a cold system with gases trapped in a cold thermostat, or disappearing coolant with no apparent leakage. If you have a leak at the top level of the radiator (where it usually is on this vehicle), or between radiator and recovery bottle, vacuum will be lost and coolant from recovery bottle will not return to radiator, making you to believe that radiator is full. Don't ignore a car that loses coolant. Get it back to the house and check stuff again. It is a slow leaks about an overflow in 2 weeks and no dye marks. I had the exact same problem (2001 Passat 1. There are no visible leaks anywhere from the radiator or anywhere else. I have had to add coolant to my 2000 Jeep Grand Cherokee 4. I tried a lot of other products that claimed to seal cooling system leaks, but this is the only one that really worked for me. The chances are your head is cracked - normally at no 1 cylinder. -It looks that coolant has sprayed out from around/under the filler cap. Leaking oil-to-water cooler. i will drive it then part. This often happens when. temp stayed right in the middle of the gauge. The heater core is brand new,but ya never know. I just changed the engine oil several days ago, when I passed 8,000 miles on the odometer. Exhaust If the head gasket on the vehicle has weakened or burned, it can crack or blow open a water jacket that sits in proximity to the top of the combustion chamber. the disappearing coolant may be leaking from the little drain hole in the water pump housing. I have not checked the hose next to the firewall on the passenger side but I will today or tomorrow. shop r/r gasket, timing chain, coolant gasket areas, and noted that there was pitting in the coolant area on the timing. either slightly warm or at full rest. I have done all the maintenance. my passenger footwell looks good as well. Jump to Latest Follow 1 - 14 of 14 Posts. Coolant doesn’t disappear by itself; there must be an internal or external leak somewhere, even if it is only a really small leak. Rover 400 - Disappearing Coolant - R40 : Don't use Radweld on a K series engine! The engine design includes coolant paths that are very small bore and any leak plugger will just stop the paths up and cause you much bigger and costlier problems. I have a 2008ZO6 with no visible coolant leak. * engine is completely stock. If you use a stop-leak product, you will also need a coolant flush to remove excess stop-leak. I need to refill the coolant container every 30 miles or so because the light for "add coolant" goes on. The shop that did the head gasket said it probably was just an air pocket but it has been a week and a half and about three hundred miles and stills disappears from. The empty sc coolant reservoir is also accompanied by a humming noise coming from the reservoir. How can I further diagnose my coolant leak? Answer. * water pump is new. There are no visible leaks anywhere from the radiator or anywhere else. Jump to Latest Follow 1 - 20 of 29 Posts I checked everywhere with a flashlight even from underneath and I didn't see coolant or crusted coolant anywhere. Q Perform a complete oil and filter change and run the engine. There was no milky oil or sweet smell on the dipstick. How much oil did it take to get back to the top of the line? And for coolant how much do ytou lose in a day or 2?. Leak on highway under pressure and no leak at idle. Ive been putting coolant in every month for the past few months. I let the car sit for 30 min or so, and NO LEAK!. An internal leak is within the engine and is harder to diagnose and no coolant leaks are noticed - the coolant just Usually an internal leak is a "blown" head gasket and the coolant is leaking into the cylinders or into the oil pan. The other is the thermostat housing (which is plastic and can leak). There is almost no coolant in the reservoir, it was below the full mark. i will drive it then part. traderpats , Aug 22, 2016. Tested for CO in coolant - negative. * engine is completely stock. 2001-2006 Cadillac Escalade Models. The coolant could be getting into your oil, or it could be going out the exhaust from a blown head gasket or a cracked head you will probably be able to smell a sweet smell near the exhaust if its. Plenty of coolant in the bottle still. Put the radiator cap back. I seems as if the coolant is just disappearing so a leak somewhere that I can't see seems like a likely culprit. Conclusion Fixing a coolant leak can be difficult because they are hard to locate. HG leak is always a possibility. Heater core, head gasket, water pump. Fortunately, there are a relatively small number of possible causes. Pressure tesed no leaks. I replaced the thermostat twice as well as the radiator, water pump, lower heater hose that was leaking, radiator cap and the coolant temp sensor in the side of the water box. Still the coolant continued to go down slowly but this time no sign of it could be found. I have since fixed this issue. its a very slow leak. I did a oil change(it’s about the time) and didn’t see any obvious leak. A really good way to test for a leak I've found. Get it back to the house and check stuff again. Generally once you leak into the coolant you will also leak across 2 cylinders. August 26, 2013. Car is still over heating. Engine bay was dry, driveway was dry. My suspicion is that the head gasket is leaking as that is what happened to mine when I put a new 'Roughtrax' head on it with a pattern gasket and didn't use jointing compound (the gasket has a thin black coating that I thought was a sealant). This allows for the exchange of heat between the two systems. Passat - Volkswagen :: 2003 - Coolant Disappearing / No Leak Even though I had head gasket done/timing belt/water pump & other stuff, 3 months, ago, I'm having to check the coolant level weekly & adding about 1 cup of water to pink coolant every 8 - 9 days. Couldn't find it for months, but coolant was definitely going somewhere. Low coolant in chevy truck 5. It is not leaking out on to the ground though. Normally the owner has tried in vain to find the leak and sometimes, multiple auto repair shops have been unable to find a source. First, if you only look after it has disappeared, there is no coolant left to be leaking Second, coolant will often leak only under pressure, when it expands from being hot. All clamps and sensors dry and tight. If the pressure leaks down and there is no external evidence then the leak is internal to the engine as in a blown head gasket. If it is a really small leak that you cannot find, you could try to add some of the leak stop fluid mentioned earlier. I have had a friend of mine who has a garage pressure test the system and there are no leaks present. If the pump leaks you should have a pudle on the ground though, but just the same look around it and under it to see if you have a trail, also look at the housing behind the Alt. If no leaks occur, then you have fixed your coolant leak. Once the car was returned I re­checked the coolant level and it was below the minimum mark. Coolant loss is a cause for concern, but many live with it as “just one of those things” and are quite happy to check and top the system up regularly. 2007 coolant disappearing. I have replaced the reservoir cap, the water pump, and a week and a half ago, the head gasket. Finally had a monster leak after doing a coolant flush-and-replace. Circulation problems are caused by clogged radiators, bad water pumps, non-functioning thermostats. I started my car to a lovely message, check coolant. Often, you can tell coolant has leaked into the lubricating system by the appearance of a milky white substance on the dipstick or under the valve covers. Hi Saar, I hav a Mitsubishi montero 4M40 2. I took it to the shop when it first leake/started disappearing four weeks ago and they checked everything including the hoses and said there's no leak so I tossed the problem aside. The engine was not running for this test. Mine would have dropped past this. I just put about a half a gallon in it in about 4000 miles. Still no signs of a leak. The truth lies somewhere in the middle. No coolant in the radiator either. Over the past 2k, I've had to add about 3 gallon of coolant. Just under 3k Topped the overflow bottle off after last ride, machine hasn't been started since. this is a mystery. Normally the owner has tried in vain to find the leak and sometimes, multiple auto repair shops have been unable to find a source. Pressurizing the coolant system to 20-25 PSI both cold and hot may help spot a small leak but there is no guarantee. WATER WILL EVAPORATE BOIL AWAY. Last Spring, I tore down the motor and changed the headgaskets, but the disappearing coolant problem did not stop. No leaks visible, no stain on the driveway, even after high-idle'ing several times this winter. Engine - Coolant Loss With No Visible Leaks. Get it back to the house and check stuff again. Have checked to see if there is a leak in the system but it seems ok. The worst complaints are electrical, cooling system, and windows / windshield problems. I have 52k miles. 2 gallons in one day is substantial problem. He hasn't replaced the radiator yet, just keeps topping it off, since the loss is so gradual. After the leak down test, leave that pressure guage screwed onto the radiator and run the motor until the thermostat opens up. When the coolant got low, smoke started coming from the oil dipstick area. 2/9/18 - dealer performs recall 17s09 vehicle brought back again as coolant is dropping. It only leaked when the truck was shut down and cooling off. No evidence of coolant in the oil. A blown head gasket in a diesel engine causes coolant leaks, which can cause no small amount of problems to begin with, but left unchecked. coolant disappearing without any trace on the road, except when taking the belly pan off the car. Planning to check again tonight and tomorrow to see if it keeps disappearing. In my case, wet coolant was being pushed out the exhaust pipe. The car runs fine, I don't smell coolant and don't see anything dripping on the ground, no billowing clouds of white vapor from the exhaust upon startup either. Have a 2002 Skoda Octavia tdi and for some reason its using a lot of coolant (seem to be topping it up every time i drive it!!). its a very slow leak. Block test showed a combustion leak into the coolant. Naturally I filled it back up. I flushed the coolant system at 10k miles and used engine ice. It could be something as simple as a leak in the new radiator. Coolant will expand when the engine reaches normal operating temperature. The coolant is defiantly not disappearing as much as it was so I guess the hose tightening is working but I'm not sure how much more tightening the clamps will take before bursting. look for obvious leaks on hoses and the radiator tanks, then I inspect the. this is a mystery. Could it be a rotten head or head gasket and it's burning the coolant off? I pulled the plugs and they do look oddly clean like they are being rinsed. The entire cooling system is only 14,000 miles old. ONly two things can cause a disappearing coolant issue. 2 for a winter beater and couldnt hate it more. either slightly warm or at full rest. the leak got worse and a couple days ago it started to leak pretty bad, thought it was the water pump, but had my buddies dad check it out and its the intake gasket. Finding small coolant leaks can be extremely difficult. Leaks are usually from coolant pump or the radiator. All running great but have persistent leaking around the "radiator cap" on the heat exchanger. Further diagnosis is required. Coolant Keeps Disappearing? 11 Answers. 3 SCLB 4x4 Off-Road SRW - DP Tuner, Tymar intake, 35" BFG Mudders on 16x10 Mickey T's, Superlift 6" lift, DiPricol 3 gauge Pillar, 4" SS DP to 5" sidepipe to 6. Never showed on a pressure test. Don't ignore a car that loses coolant. The coolant can't just disappear, it is either leaking to the outside or into the engine. It is not leaking out on to the ground though. There are no visible leaks anywhere from the radiator or anywhere else. Pressure test showed no leaks. The 2013 Ford F-150 has 7 problems reported for coolant loss. If you smell coolant, then you have an external leak. Why? Engine coolant maintains engine operating temperatures in the best range for performance and fuel economy. Based upon readings in this forum, I am seeking advice regarding intake manifold leak detection. As the air comes out you add more coolant to keep the tank level steady. If it is a tiny leak. * My car is holden statesman WL 2005 LS1 V8. My coolant is leaking (takes about 2 months before the coolant light comes on). Absolutely raging. If you suspect a coolant leak, visually inspect all of the hoses, the water pump, the reservoir, and the radiator for seepage or the 'weeping' of coolant out of seams and gaskets. 5 gallons in the past 2 days. Refill just the radiator, same thing. either slightly warm or at full rest. I know its not a blown head gasket and have found no leaks. If i drive for about 75 miles or so the coolant is way low. Coolant is clean and tests fine. It could also be engine seals leaking. If there is a hole in between your combustion chamber and the cooling jacket in your head gasket, each time the piston pushes exhaust gas out of the combustion chamber into the exhaust system some exhaust gas will also be. Show Full Signature 2005 300C BRILLIANT BLACK, DRL, Mesh Grill/Vents, Chrome Pillars & Fender Trim, MDS Indicator, Quad Brake Lights, Tinted Windows, De-Molded, K&N Aircharger, 180 T-Stat, Flashing Sidemarkers. I forgot to mention, I also thought it might be leaking into the coolant, but the color is bright green, no brown-ish tint whatsoever, so I ruled out a leak into the coolant system. Old coolant loses its corrosion-inhibiting properties, allowing. Also you said the dipstick was dry. Under pressure of the hot coolant the bottom seam of the plastic coolant tank opened. I don't smell fuel in the coolant reservoir. The car does have AC,so it's a possibility the heater core may have a pinhole leak and drain out. 3 ISC cummins is loosing coolant, but there is no trace under the coach, where we park it. I took it to the shop when it first leake/started disappearing four weeks ago and they checked everything including the hoses and said there's no leak so I tossed the problem aside. Im the original owner. Page 1 of 2 1 2 Next > May 27, 2018 at 9:30 PM #1. OK this is a GM LS1 type engine (gen III) LQ4 LQ9. Once replaced/complete and both new hose/clamps are set, start vehicle to idle and run heater full blast for 3-4 min. The gasket is located on the underside of the radiator cap. check the passengers footwell,is it damp? if so then it could be the heater matrix leaking. The head gasket on my Scirocco let go rather suddenly about a year ago, no water in the oil, no oil in the water, just a failure between one of the coolant passages and a "fire ring" with the fire ring apparently acting as a check valve. How can I further diagnose my coolant leak? Answer. I know its not a blown head gasket and have found no leaks. I chased a coolant leak for a year in a '97 Camry. Are you using the recommended Subaru coolant? Coolant leaks can pop up in colder weather as rubber seals contract and get brittle and the leaks don't always happen when in the driveway, It may only leak when the car is up to operating temperature on the highway. If you are losing some coolant every month, no problem. No evidence of coolant in the oil. No leaks so everything was great. * engine is completely stock. The most common leaks are – Combustion chamber – The smell of coolant and/or a whitish cloud of smoke from the exhaust at startup can be an indicator of coolant in the combustion chambers, which can be confirmed by a chemical test for exhaust hydrocarbons in the coolant. 2006 118wb standard roof 78000 miles I'm having a problem with coolant consumption. I just had a leaking thermostat housing that was very small and would evaporate off the engine so I never saw a spot on the drive. 9 Cummins 12 valve. No apparent leaks, no oil spots on my driveway. A blown head gasket in a diesel engine causes coolant leaks, which can cause no small amount of problems to begin with, but left unchecked. Mine turned out to be a cracked head. Could not smell any coolant and saw no evidence of any leaks.