Quote:
Originally Posted by ninjaryda
............So two questions; does that sound about right on the metal shavings? Maybe something left over from the factory (or else this engine had some work done on it)? And for the value train noise, is it possible the timing chain stretched?
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Yes and yes.
It is also possible that the valves are out of adjustment, inducing noise.
It is possible that the cam chain is within spec but not properly tensioned due to defective or neglected automatic tensioner or damaged rubber guides (hence metal debris from chain slapping the aluminum case).