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07 crf250r knocking noise

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So my 250 started making a nocking noise when its running and my spark plug was oil fouled and there were metallic shaving in my oil filter. I  will check the valves tomorrow but the noise is a constant knocking sound and I have no idea what it could be?

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Copper or aluminium colored shavings?

 

With a knock and shavings, checking & adjusting valves only won't matter,  

unfortunately it's time for a complete engine teardown.

Edited by mlatour

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4 hours ago, mlatour said:

Copper or aluminium colored shavings?

 

With a knock and shavings, checking & adjusting valves only won't matter,  

unfortunately it's time for a complete engine teardown.

I wanna say they were aluminum 

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