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Everything Dirt Bike
Make / Model Specific
Yamaha
Power valve removed?
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<blockquote data-quote="CTridez" data-source="post: 220312" data-attributes="member: 4868"><p>Hey guys I just recently purchased a 98 yz250 it runs decent but is a little boggish getting to mid range. This kid I bought it from had said the previous owner removed the power valve for "better low end torque" this is something I've never herd of and was wondering if its even possible. He also claim he replaced the main jet on the keihin pwm carb, causing plug fouls. When I looked it was a #175. Is this proper jetting? If anybody can shine some light on my situation it would be appreciated.</p></blockquote><p></p>
[QUOTE="CTridez, post: 220312, member: 4868"] Hey guys I just recently purchased a 98 yz250 it runs decent but is a little boggish getting to mid range. This kid I bought it from had said the previous owner removed the power valve for "better low end torque" this is something I've never herd of and was wondering if its even possible. He also claim he replaced the main jet on the keihin pwm carb, causing plug fouls. When I looked it was a #175. Is this proper jetting? If anybody can shine some light on my situation it would be appreciated. [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Yamaha
Power valve removed?
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