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CB466f

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McCabe-Thiele (Ted):
I can't hear the noise you describe in my head - if you fear running it up again my starting point would be to turn it over without the plugs in to see if there are any strange noises - drain & check the oil & filter for debris.

Check for the proper location of the camchain tensioners blades - had you done the cam chain tensioning with the engine running or had you not got that far?

philward:

But a zzzZZZPPP sounds more like a piston to me (?). I would think knocking or clunking is how a bearing sounds....

Logically, I would agree with you, it sounds like a 'nip up' rather than a bearing failure. As per Ted's comment, drop the oil and look for debri plus maybe a compression test?
Good luck and hope its something simple and nothing serious

Erwin83:
Seems the battery was all dry. I'm not cheering (not at all), but I'm going to try with a better battery. Not sure how the sudden stall could be caused by a bad battery, but it's an easy check.

McCabe-Thiele (Ted):
There is a tendency to fear the worst especially after a substantial amount of dismantling has been done. Fear for the worst hope for the best dilemma syndrome.

Erwin83:

--- Quote from: Macabethiele (Ted) on August 22, 2021, 04:45:33 PM ---There is a tendency to fear the worst especially after a substantial amount of dismantling has been done. Fear for the worst hope for the best dilemma syndrome.

--- End quote ---

Yes, I always "shit 7 colors" (a dutch saying meaning you feel scared) when I run the bike after each rebuild.

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