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Dirt Bike Brands - Other
deceleration knock with 2 strokes
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[QUOTE="georgieboy, post: 1232540, member: 21186"] Thx guys, for the info about pre-ignition and flamefronts etc, but still i feel these are not the answers to my, and others, problem. It seems that there cld be a issue with the way some cilinders are shaped in accordance to the pipe design(?), that are very senitive on lean spots in a/f mixture. That it occures with shutting down the throttle, when there is no load on the piston, is strange though. So, i was thinking of backpressure, scavenging with the a lean a/f from the cilinder, that plays a role here. What makes me think it more strongly is that there is a spot just at 1/8 of throttle opening that makes the engine surge and accelerate while coasting. Normally a 2stroke will load up at that point ;) Yr thoughts pls? [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
deceleration knock with 2 strokes
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