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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Confusion on jetting..
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[QUOTE="maco, post: 699517, member: 41298"] I'm not an expert on jetting but would like to help if I can.Cold weather condenses the oxegen molucles,so more oxegen.This should richen your mix.The other variables would be humidity and altitude.If there is a higher humidity there is less oxegen and more water in the air.This would make your mix on the rich side.Since your area is going down in temps and your noticing problems with throttle positions I think your on the right track,provided humidity isn't also a part of your problem.If your sure your carb is not having any other problems,air leaks and your air filter is fresh then you might want to go back to your original jetting and start with your pilot circuit and make sure that's right.Then your needle positon and then try one step on the main.I'm assuming your on a 2 stroke because of the lean concern. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Confusion on jetting..
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