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Grey/Blue Smoke When Engine Braking 120-130 1968

posted by  Phil S. on  Sun Sep 25 15:38 CST 2005
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last visit: Fri Oct 24 13:18 CST 2014
[RELATED]

I agree that the likely culprit is worn valve guides, which is no big deal if the smoke isn't obnoxious and oil consumption is within reasonable limits. However, those B18-style seals on top of the retainers do just about nothing to control smoke on deceleration -- if you leave them off entirely, you'll get a brief puff of smoke on start-up, but no further smoke as long as the guides are not worn beyond spec.






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