Bad, bad day.. (head gasket)

[tommyinla]

Originally posted by Nixon1
So you have to pull a valve cover in order to do a compression test for a bad head gasket??
Also, just for my own information..with a blown head gasket, what about that would cause the engine to misfire in low rpms only? (Less than 1000)

no, you don't have to pull the valve cover to check compression... you do that by unscrewing each spark plug and checking that cylinder's compression one at a time... what i meant was that, if you pulled the one valve cover and saw the same brown junk, you would know that you had a problem...

as far as a misfire is concerned, if that cylinder was in bad enough shape (compression wise) from a blown head gasket, then it probably wouldn't fire...