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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Jetting Changes for Oxygenated Fuel
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[QUOTE="luvtolean, post: 499646, member: 35524"] Well, one of the ways I have been told to check jetting is to do "plug chops". In my Honda manual, it gives a chart showing where each jet is most effective. For example, at full throttle, the main is the most important circuit. Just off idle, the pilot jet is important, and the needle has some effect as well. Using this information you can go out and run the bike in an open area at the particular throttle postion you are interested in. After running at a specific throttle position, you hit the kill switch to kill the motor, and coast to a stop. Then you pull out the spark plug and check it. Some people mark the throttle so they can easily know what throttle position they are at. Of course, other lean signs are poor cold performance, and the pinging you mention. I'm sure others here have better on track riding inputs than I, hopefully they'll respond. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Jetting Changes for Oxygenated Fuel
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