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09 YZ 250 Cold Sieze

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Took off kinda quik this morning without warming up my bike. About halfway thru my lap my bike loss power. It sounds good but when you ride it feels like there's a rag in the airbox. I'm guess I might have siezed it.

Anyone ever experience anything like this..?? The tear down starts tomorrow.

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I would definitely tear it down and take a look at the piston. Sounds like you've already got a good plan. Report back with your results.

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used to be very common... improper warm-up is a classic no-no... but, of course, you knew that... bummer about the bike... engine damage on a new ride's got to be depressing

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Check how much spark you are getting once that happened to me on a kx I started it up and took off without warming it up and it idled fine but once it got to a certian rpm it would die because it didn't have enough spark

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