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tweaked valve on yz 250 F
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[QUOTE="mxer_69, post: 124087, member: 20959"] The piston only hit one valve, the middle back one. The mark it made isn't bad...barely noticeable. But i don't know if it was enough to tweak it. I've run out of idea's. I'm taking the head in tomorrow to see if its the valves. I can't see any gaps or anything by eye and i thought there would be if i could actually hear the hiss. What other things could it be to make it hiss???????? Plugs tight, gaskets good, Has to be the valves....... [/QUOTE]
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Dirt Bike Brands - Other
tweaked valve on yz 250 F
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