Re: 89 gmc knocking under load 350 TBI
Well I cleared the codes and went for a ride. No engine lights at all but that out of time/lack of power is still there.After cleaning up my dads leaves I took him for a ride and he agreed that it sounded like it was out of time by the the sound of the clatter.So if the timing is on the mark and its clattering and lacking power, what then-valve job,collapsed lifter or could there still be something electronic causing it? Thanks again.
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