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Everything Dirt Bike
Make / Model Specific
Yamaha
2001 YZ250 Idle
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<blockquote data-quote="ossagp" data-source="post: 195898" data-attributes="member: 1650"><p>99% on the air leak. if your power valve closes then as 2s says, no way that it can be related to your problem. one of the common causes is a leaky seal on the ignition side. you can sometimes confirm that if the rpm tends to go up with the cover off. if it does rise, then you know for sure that seal needs replacement, but of course may not be the only cause.</p><p></p><p>did you check to see how close to stock the pilot jet is?</p></blockquote><p></p>
[QUOTE="ossagp, post: 195898, member: 1650"] 99% on the air leak. if your power valve closes then as 2s says, no way that it can be related to your problem. one of the common causes is a leaky seal on the ignition side. you can sometimes confirm that if the rpm tends to go up with the cover off. if it does rise, then you know for sure that seal needs replacement, but of course may not be the only cause. did you check to see how close to stock the pilot jet is? [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
2001 YZ250 Idle
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