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Dirt Bike Brands - Other
deceleration knock with 2 strokes
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[QUOTE="georgieboy, post: 1234639, member: 21186"] Thanks for help, and yr encouraging words ;) I don't want to deal with racefuels. In europe fuel quality is no issue, we can both have 95ron and 98ron, of good quality. Sometimes you walk into some bad fuel with the smaller brands. But that rarely happen. A mismatch in the porting... I really hope not.. as we are talking about a new 2008 200exc ktm here. But when i lift the jug off, i know for sure. By mismatch you probably mean a flow directly from the intake port into the exhaust port? The strange thing is, that the whole back knocking thing is most present when on a downhill braking on the engine. The throttle is closed, and the engine is kicking and accelerating on every knock. When i pull in the clutch, it is vanishing. My dilemma is, why is this knocking only on closed throttle, when decelerating to a idle. Shows a too high squish only on deceleration? When the engine finally come back to its idle rpms, the knock is gone, and it idles just fine. [/QUOTE]
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Dirt Bike Brands - Other
deceleration knock with 2 strokes
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