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Old 07-08-2018, 09:43 AM   #12
BILL WILLIAMSON
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Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,560
Default Re: Knocking Sound Comes, Then Goes

Pull OFF the # 2 & # 3 plug straps & start it. If the noise is GONE, it's the center MAIN! Take off the upper bell housing inspection cover, with a socket & extension on a pressure plate bolt, see if the flywheel will rock back & forth about 1/8" or so. If it does, the FLYWHEEL BOLTS ARE LOOSE!
Bill W.
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