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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
wide open misfire Help!
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[QUOTE="tedkxkdx, post: 660522, member: 39245"] At wide open throttle the Needle has nothing to do with your mis fire. You are totally on the main jet so while riding at WOT does the bike feel weak and popping, then it is lean. What altitude are you at? It sounds to me like you may be running to lean of a main jet. Did this occur with the stock 160 main? As you describe your roll on and twist quick to full I further think it is main jet induced. Running the needle in the top position is not correct either. You should be changing needles if that is where your needle has to be. And since it seems you are not getting fuel your needle clip should be lower not higher. Lower clips mean more fuel into the carb and vice versa. Clip position effects 1/4 to 1/2 throttle and the needle taper is all the way to 3/4 throttle position. So placing the clip in either of the outer positions is for testing only, not constant riding. When you ride at half throttle constant are there problems? When riding from half and quickly going to full throttle is there hesitation? If yes to either then your needle is too lean. Hope this helps. Isolate by circuit not the overall jetting since you talked about what pilot jet you have. [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
wide open misfire Help!
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