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crf 100 wont idle

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my buddy is selling his crf 100 and we have adjusted the idle screw all the way and will only idle on choke. any ideas whats wrong?

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I would say clogged pilot jet.

Take the carb off and give it a good cleaning :lol:

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we cleaned it then put it back on and now it doesnt idle. it idled good before we cleaned it

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Pull if back off, remove all the jets, especially the pilot jet. Get a small piece of wire, run it through the pilot jet. Make sure you can see through the jet. Recheck all that you taken apart. If it idled before and doesnt idle after, you did something wrong. No big deal! Learn by error. Make sure needle and seat are in place. Make sure spring is in place for float. And not keeping Needle and seat closed.

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