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Old 04-28-2019, 02:19 PM
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Default 02 XR 100 won't start on choke and idol hangs

     

I just got a 02 XR 100. It won't start on choke. It will start if you take the choke off and place it in down position and give it gas. Then once it is on, the throttle hangs and gives a high pitch.

Things we have done:
Cleaned every crick and cranny of the carburetor and all the pens/tubes.
Checked for air leaks
Adjusted the screws for idol and fuel. Not sure if we are adjusting the screws correctly or if we are not understanding what each screw does? We spent a while trying to adjust them but nothing seems to change doing so.

Not really sure what else to do?

---------- Post added at 01:19 PM ---------- Previous post was at 01:15 PM ----------

Also we noticed there was no O-ring on the pilot jet. Someone mentioned this could cause an issue. Any ideas?
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Old 04-29-2019, 08:23 AM
cowboyona426's Avatar
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Sometimes on smaller motors like this, the passages in the carb are so teeny tiny that even the smallest of foreign debris can cause an issue. Make good and sure that the carb is truly clean, some people will use an ultrasonic cleaner or you can buy a can of "carb dip" at an auto parts store that works sometimes as well (plastic and/or gasket material will not jive well with the carb dip). I would try a new pilot jet. That bike should not have an o-ring on the pilot jet to my knowledge, but if you see a groove where an o-ring should be on the outside of the jet and you don't have one that could very well be the issue.
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