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New Pipe/Silencer and...
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[QUOTE="njrealtor55, post: 1001226, member: 63820"] outside temp will effect jetting. colder outside air will use more fuel. the jetting for the summer will not be good enough for winter use (providing your summer jetting is spot on) just go ride like normal and pull the sparkplug and take a look. if it looks lean (whitish) then you need to re-jet. if it is dark brown or black, then you are fine. do not do anything extreme at either end of the rpm range while checking the plug - lugging the engine or screaming high rpms. if you ride it normally you can get a good indication of the general jetting condition from a plug check. if the engine starts to loop or not idle correctly or unable to come down from higher rpms to idle smoothly, turn the air screw in to richen the mixture up on the bottom end. try to keep the air screw at 1/2 turn out or more. i have found my kx doesn't like anything less than that. FYI, in the summer it is about 1.5 turns out. [/QUOTE]
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MX, SX & Off-Road Discussions
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New Pipe/Silencer and...
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