Quote:
Originally Posted by keith6989
I'm thinking it could bad a bad valve seat, I doubt it would be bad rings/walls on just one cylinder... What do you guys think? I also think that it is not a good idea to put anything in your oil, I am told that this is instant knock for older cars. I am not sure and I wouldn't recommend it without a second opnion, But is is it possible to run a hotter plg in cyl #1? What you guys say?
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Depends on his definition of "fine" for the compression check....but a bad valve or valve seat usually won't be "fixed" by a squirt of oil before doing a compression check. And bad rings in one cylinder is certainly possible.
I agree with you on the "mystery oil" additives. Masking a problem is NOT a good idea!
C.J.