Impreza :: Coolant Leak But No Visible Sign Of External Leakage
Sep 4, 2013
I've had to replace my radiator twice due to it overheating. I am noticing coolant level going down but I'm not seeing any signs of an external leak. My garage is saying it is probably internal and going into the engine. Says I probably have to replace the head gasket but that will be very expensive.
Could I get some further feedback on what it could be and what else I could do? I am also getting a check engine light on a "lean mixture" issue. Not sure if they are related.
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I have a '98 Honda Civic with 230K miles on it. Last month, I suddenly saw few drops of coolant on my garage floor. I opened the hood and saw coolant splashed over the engine. I opened the coolant reservoir and it was empty. Surprisingly, the car never overheated and neither did the temp needle go up. I took the car to the mechanic (Honda shop) and they said that the radiator is leaking. I replaced the radiator and after driving for couple of weeks, the same issue re-occurred.
The coolant ran low in the reservoir and there was coolant splash over the engine. I took the car back to the shop and they said that the hose was not properly installed. They fixed it and said there is no sign of leak. I have been driving for a week now and check the coolant routinely. I have noticed that the coolant level has again dropped significantly. But, after the last fix, I do not see any visible sign of leak. There is no evidence of coolant anywhere under the hood. I am not sure if there is something else going on now. Is there something else I should check?
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2007 Mini Cooper (Not the S model) burning coolant. Have brought to two mechanics and no visible external leaks. Both did a pressure test and was fine. They think the head gasket is blown. Car is operating normal.
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I have a loss of coolant, and I can smell it as I drive. I looked under the car today every hose is dry to the cooling system, so I thought look where the heater core is, everything is dry there too. No sign of Head gasket leak either. I just can still smell it, and still losing some but it is very little. What should I look for next?
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Coolant leak on the passenger side. Leaking enough to leave a puddle on the floor. This is a 2000.
The water pump is good. Weep hole is dry. All of the radiator hoses look good.
The traditional intake manifold gasket looks fine, even though that isn't really a suspect here.
Looking up from the bottom, coolant is dripping from what appears to be a lower motor mount right next to the oil pan. Also, the area around the crankshaft pulley looks wet.
What should I look for? Could it be a leak from the engine oil cooler? Are there hoses on the back side of the engine? It doesn't look like it's anything simple.
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I started loosing a bunch of coolant on my tdi which is still under 36k and there is no visible leaks anywhere
Took the car to the dealer last night to get it checked out and they were ready to send me back home telling me there is no issue since they don't see any leaks under the car
Either way after telling them that I have already gone through 2 gallons of coolant they decided to top off the coolant and ask me to drive 200 miles.
I drove 156 miles last night since I need to get this issue resolved and now the coolant tank is empty again... sitting at the dealer while I'm typing this.
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I have a 2006 Jeep Liberty (2WD), 149k miles, that has been using a lot of antifreeze lately. I am using a full 50/50 gallon mix about once a week. I do not have any visible leaks. My heater no longer works and I was not sure if that may be a cause. The check engine light is on, but has been since I purchased the vehicle in 2012. I thought it may be a gasket, but do not see any white smoke from the exhaust. I am not hearing any strange sounds, so I am perplexed.
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My 1999 mercury mountaineer 4.0 smells like coolant there r no visible leaks overflow is at the normal the temp gauge didn't go high and the cap is cold IM kinda confused...........
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Our '03 Infiniti I35 lost large amounts of coolant each time on 2 long trips but when we did a pressure check, we couldn't get it to leak anywhere we could see and no visible signs of where it may have leaked while driving (no drip lines, puddles, etc.). We're not sure where the water pump is located, but have been told it's internal to the engine, so how can we tell if it's gone bad? Would the coolant burn off with no visible signs? We changed the radiator cap but no change. We use a trusted shade tree mechanic, but he's stumped.
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Just noticed my level is about an inch below the full mark, it was fine at the last oil change, no leaks that I can see....nothing on the ground.
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The oil cooler mounted above the oil filter on my 2002 Explorer 4.0L V6 has a major coolant leak on one of the external line/hose bib elbow. I've googled Explorer oil coolers and I've searched this forum with no luck. Can you bypass it without any problems mechanically or electronically (throwing error codes)? I have already purchased a new cooler and the lower oil cooler line. I'm just wondering if I should return the parts and bypass it. If I go through the replacement, I noticed the cooler is mounted by a pass through threaded tube with a hex head molded into it for fastening/loosening purposes. What size hex head socket it is?
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My 2002 has had a slow coolant leak for quite a while (maybe a quart a month). Now, however, I am losing over a gallon a week, but with NO visible leak!
The oil is clear, with no signs of antifreeze in it, so I am guessing the head gaskets are ok. But I am perplexed as to where my coolant is going!
After reading more threads in the forum, (which I should have done more thoroughly before posting,) it seems that I may indeed have a head gasket leak. From what I've learned, that would cause me to lose coolant through the exhaust while driving, and would explain why I don't see a visible leak anywhere. Am I on the right track? Before I replace the head gaskets, are there any other causes that may have a simpler fix??
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I can see no sign of oil leakage or oil burning. The car runs great, about 159M miles. Yet, it goes through 4 qts of oil every 1000 miles. If you don't check it frequently, it suddenly is 'dry' and takes several quarts to bring back on the stick to full. There is a little puff when first starting of light smoke, then nothing out of the ordinary.
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I've had my R32 for a year, in that time the car has used a quart of coolant in 9K miles. Is this normal? No visible leaks.
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I have a 2003 6.0 and I am havi g problems with it stalling once getting up to operating temps. I found a leak earlier after the engine stalled, it was leaking pretty good around a drop every 2 seconds but stops once the engine cools down some. I noticed the oil dripping from under the oil pan.
Can this be the cause of the engine stalling? Or just another problem? If it can be the cause where can the leak possibly be coming from?
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On starting today I had an alarm to check coolant. Never had this before - and the expansion tank was dry. No visible signs of loss - Oil seems fine and free from contaminant.. so I guess not the head gasket!
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I have a 2005 Cadillac CTS with a 2.8 V-6. I have changed the Mobil One oil when ever the oil life has hit 50% since the car was new. I have 122,000 miles on the car now. In just the past few months I have noticed the coolant level going down at a rate of about 1/4 inch ever week with no visible signs of any leaks. I have pressured tested the radiator and the test comes back with no pressure loss. I also am losing about a 1/3 to a 1/2 quart of oil ever week with no signs of any leaks or smoke out of the exhaust pipe. I drive about 600 miles a week. My son is a tech at the local Chevrolet dealer. He has looked over the car and can find no visible cause for the fluid loss.
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I am a clueless 2003 Volkswagen Passat 1.8L Turbo owner. My power steering line has a visible leak that I can see underneath the front bumper. The leak is now more like a hole and was caused by the line dragging after the car was in the shop. I guess someone bumped it or it got knocked loose, but at this point, I need to just get the line fixed. The leak is on a U shaped part of the line, and I can take a picture of it.
I also understand that the power steering fluid is not the standard type...where do they sell the kind I need?
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I have an Oct 2001 2.7 GLS which apart from the odd ABS Tone Wheel and speed sensor issues has been uber reliable and a real pleasure to own (I've had it from new).
We had a problem about a year ago when the wife didn't get the fuel cut-off when filling up and over filled the car resulting in fuel pouring out of the tank vent and down the fuel tank under the car but after a long drive that cleared up and has not happened again. Interestingly we didn't get any engine CEL's or have any codes turn up at all when checked by my mechanic.
Over the past couple of weeks we have noticed a very strong smell of fuel under the car around the fuel tank. I can't see any indication that there is a fuel leak but have noticed when filling up that the smell is very strong and as the car runs the fuel down the smell reduces to almost nothing.
Today I removed the rear seats and the fuel pump access panels to see if there was any seeping around the pump gaskets but couldn't see anything and the top of the tank around the both pumps was a dry as a bone. Using a torch I did however notice that there was a darkening of the fuel tank surface in the centre which I guess is close to the vent valve, part 311990b:
Or maybe is where the fuel vent pipe runs to?
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When I got my 2016 back at the end of last October, the pink coolant in the main degas bottle was just visible in the clear top half of the bottle. By the time 5k miles rolled around, the coolant was no longer visible in the clear section. At oil change time, the dealer "topped" it, resulting in it being visible in the tank again. 3k miles later, the coolant has disappeared below the clear part of the bottle again. What gives? The secondary bottle level has not budged. Its clearly not losing a lot, but it is definitely going down slightly.
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OK so I have a 2010 6.4 fully deleted. I have noticed that after driving my truck and parking it there is a strong coolant odor but no steam or visible leaks. the truck runs as good as ever and I can't seem to find the source.
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