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Re: 1985 F150 engine knockPosted by VADAVE on July 14, 2003 at 11:03:03 from (63.104.174.146): In Reply to: 1985 F150 engine knock posted by jimks on July 14, 2003 at 10:55:37:
From your discription it sounds like pre-ignition. Try backing off the timing a degree or two and see what happens. This will reduce the power slightly but if it does away with the knock you get to decide which to put up with--the knock or less power.
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