Remove the spare tire from the carrier. this will give you better air circulation around the radiater. The "bubbeling out the over flow tank" has me uneasy from here. A leaking copper sealing ring can let exhaust into the cooling system as a frothy foam and allow overheating. This must be eliminated as a suspect. Remove about 1 qt of coolant in the expansion tank , to allow room for the foam in this tank,as opposed to the overflow tank.Now you can have a service station stick a emissions testing wand inside the tank and check for carbon monoxide, or you can do this yourself. Type in carbon monoxide into the archives(7/05) and there is a test there with a common household carbon monoxide detector that may let you do this yourself. If you find exhaust in the cooling system, I think you can disconect one spark plug wire at a time to see which cylinder is the culpret. |
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