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another cahin
Posted by JohnK (more from JohnK) on Mon, 7 Jul 2003 07:34:56
In Reply to: Re: What is this ? Maybe chain rattle? Input??, Dave of Everett, Sun, 6 Jul 2003 01:27:12
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Since 86spg's noise was heard while not moving it could not be the primary drive chain. Rather, i would suspect that the timing chain could be occasionlly slapping against a shot guide/pad in the top of the valve cover. These pads get rock hard from heat and need replacement every 150k miles or so. Chains also can stretch and need replacement. when you pull the valve cover, you can inspect the chain timing marks for alignment with the engine at TDC. If not lined up and the chain shows wear...time for a chain.
Get a big screwdriver and hold the handle to your ear and touch the tip the valve cover in several spots to pin down the clatter. If the noise is right near the firewall, the noise is probably the chain. If not, you could have a weak lifter, which can also be replaced.
posted by 216.75.9...
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