07-05-2010, 06:30 PM
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Senior Club Cobra Member
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Join Date: Jul 2002
Cobra Make, Engine:
Posts: 15,712
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Not Ranked
Just musing on this problem, may not be applicable...
In my case I determined that the VERY clean plug was a result of water in the combustion chamber, that has a tendancy to cut carbon and clean the chamber in general. I found what I thought was a bit of moisture as I cranked the engine over and felt, sniffed, inspected the compression gases being pushed out the empty spark plug hole, which led to the conclusion, blown head gasket.
Of course I changed the oil, but I've always wondered, is it possible that compression gases were going into the water jacket when I was driving "hard" but that no water was actually getting into the oil? Perhaps a small amount in the combustion chamber, not enough to really show itself, other than a "hunch" and a super clean plug.
Perhaps a blown head gasket doesn't always mean water in the oil? Is the question.
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