I have a mystery coolant leak... any suggestions...
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Joined: Jul 2003
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I have a mystery coolant leak... any suggestions...
The leak is intermitent and my mechanic couldn't locate any leak what so ever. Checked the usual stuff like the resevoir, radiator, water pump, but could not find the leak at all. I find it amazing they couldn't find anything considering I managed to drain the whole resevoir in only 30 minutes of driving. Any suggestions on where they leak may be. It is a 1998 2.8QM
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Joined: Apr 2003
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Wow! Here's an idea......
Run it hot, then shut the engine off. Put a coolant system pressure tester on in place of the reservoir cap & pressurize the system to 15 psi. Check it every 15-20 minutes, meanwhile take out the spark plugs. Once it's cooled down, look & see if there's any coolant accumulating on top of the pistons.
That, and the heater core are the only things that won't necessarily leave residue under the hood. I would think someone would notice the smell if your heater core was bad, so head gaskets is my next guess. That or a blind mechanic ;-)
That, and the heater core are the only things that won't necessarily leave residue under the hood. I would think someone would notice the smell if your heater core was bad, so head gaskets is my next guess. That or a blind mechanic ;-)
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Re:I'll 2nd the head gasket idea.
Check and see if your oil is mixed with the coolant. If its burning it , then you should see white smoke and the exhaust has a sweet smell to it. The pressure test is a good idea.