Question about 2005 Honda CRF 250 X

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06 250 crfr bike wont start

Bike was idling low went for a ride bike quit seems like there is little compression when kicking over, wont start anymore, before the bike quit there was a sound that came from it like the piston was moving around or little loose?

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Try adjusting the valves It tells you how in the owners manual, you have to run to the shop to get the right shims though. Or just take it and let them do it.

Posted on Jun 02, 2009

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Sounds like piston rings gone/con rod broken, 2/4 stroke? stupid question but did you check the spark plug/s? if missing/blown off will cause low compression,

Posted on May 09, 2009

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Tim,
I would look at three main things first. Compression, spark and fuel. Once in awhile us mechanics can get a "hunch" of what's wrong but overlook some common problems. I would invest in a compression tester and a spark tester. Both are fairly cheap and available at any parts store. Simply unscrew spark plug and srew in compression tester and turn starter over. Observe the reading, do this for all cylinders. Then put plugs back in and install spark tester. Turn starter over and observe spark. If you can get your bike started again, check compresiion and spark when your unit fails. This should put you in the right direction. Hope this helps!

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It sounds like you cooked her. If you are jetted lean, and run it wide open for a long period of time, it melts the ring to the piston.
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