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Dirt Bike Brands - Other
deceleration knock with 2 strokes
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[QUOTE="76GMC1500, post: 1232348, member: 73139"] Quick, delete your post before Rick sees it. My take on the situation is that the knocking/bucking during decerlation has a lot to do with the way the engine is ported. KTM 200's have a very strong idle, they'll idle for an hour if you let them. I have ridden a KTM 200 or 2 and they do buck a little going into turns (RM250's have always done it the most, though). None of these bikes were my own so I didn't want to adjust anything on them. My CR250 does not knock, buck, or make any weird noises at all going into turns. My bike has almost no idle. When you shut the throttle, it does not fire. The KTM 200's on the other hand do fire randomly/periodically during deceleration. Since it's something that is easily reversed and doesn't take any time or money to try, I suggested the poster simply back his idle down and see if the problem goes away and maybe find a happy medium between a useable idle and no bucking going into turns. Running a step colder spark plug may also have an effect but that could have other negative effects and isn't free to try. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
deceleration knock with 2 strokes
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