How do I know if head gasket is blown on my 2000 Chevy Cavalier?
Usually the most obvious is milky colored engine oil or oil in the radiator, however there are other sign also, white smoke out the tail pipe usually on initial start up, an engine miss at start up then it goes away, high pressure in the cooling system in a very short period of time, usually under 5 minutes. Those are the things any novice can check for. If you have an old fashion block checker that will also tell the tale, a lot of shops still use this old system cause it is still the best and quickest way to detect combustion gases in the cooling system. HTH
A compression test might show up a bad head gasket.
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