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2007 RMZ250 Wont idle

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I recently picked up a 2007 rmz250. The bike will run at 1/8th throttle but will die as soon as you let off the gas. Choke wont stay on and it backfires a little. 


I took all the slack out of the throttle cable and even turned the idle screw to the max and it still wont idle. 


I messed with the fuel screw on the bottom a little and it seemed to help it run smoother (about 2 turns out) but still I can't get it to idle without holding down the throttle. 


I also cleaned the carb and made sure the jets weren't clogged. While reassembling the carb,  I overtightened the decompression screw on the carb and it broke off inside. It took some time to get out but its out now and have a part coming in the mail. 


This bikes really starting to seem like a bad idea 



Someone please help me

RMZ250 07.jpg

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