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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
new woods pipe
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[QUOTE="kdx633, post: 688244, member: 45351"] i know the 200 is a slightly different animal however the carb/pipe theory of operation is the same.i'm sure you have read all do's and don'ts about fuel etc.but 52:1 sounds very lean fuel/oil mixture,not to be confused with fuel/air mixture.52:1 will make f/a mixture very rich.initially i figured my problem was related to excessive air box vacuum.method of proving this right or wrong was to remove lid all together and air filter [just a couple minutes for testing ] changed trouble slightly,not enough to make it feel spot on.so on to next phase was pilot jet.the idea that it was too rich bog and not lean bog was the puff of smoke it would emit for a second or two after slow speed ride then fast twist on throttle when the engine could burn off excees fuel.I just assumed the flat spot up top was a virtue of the pipe and it is to a certain extent,however after pilot thing was sorted out the flat spot got bigger thats when did wot check,found lean etc.and now bike pulls much harder up top as well.one last thing and i promise to quit rambling,with the stock pilot bike would cold start on 80f day w/o choke again pointing to pilot/rich thing.with the kdx wonderfull front end the stumbling engine is just a ton of fun,is'nt it ? once cleaned up you will be pleasantly surprised.each bike is different use it for w.i.w. [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
new woods pipe
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