03 cr250 mid rev rattle

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5/5/2018 9:10 AM

I bought an 03 cr250 and it makes weird noises, about 1/4 to 1/3 maybe 1/2 throttle it makes this really strange rattle, checked to powervalve cables, rebuilt the top end, don't really know where to for from here. Any knowledge helps! Thanks

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5/5/2018 3:36 PM

What premix & jetting are you running ?

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Speak softly and carry a big stick.

5/5/2018 4:23 PM

Detonation?

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No brains, No headaches.

5/17/2018 12:02 PM

clutch lever slop?

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Don’t piss off the old people - the older they get the less “life in prison” is a deterrent for them!

2020.5 KTM 450 SXF FE
2006 KX250