1992 GMC knock noise
ShariNorman
09-24-2007, 07:53 PM
My 1992 GMC has a knock noise when accelerating. Help!
twistedthumper
11-23-2007, 12:43 AM
does it have the knock at idle? it could be a sparkplug pingin against the piston or a valve opening to far or not closing.
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