low compression - #3 cylinder
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Originally Posted by yogi,Dec 5 2004, 12:08 PM
He's losing ~100psi in one cylinder...can it really knock itself that far off? Wouldn't it be a really loose valve and not a really tight one?
A really loose valve might effect compression if it's an intake valve and it's loose enough to keep it from opening enough to allow a full charge of air on the intake cycle. If it were that loose, however, you'd be hearing one hell of a rattle out of the valve train and "know" that something was wrong long before the CEL came into the picture.
Drive Safe,
Steve R.
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