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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
just got a YZ 250. it wont crank
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[QUOTE="Tommygunn, post: 1336682, member: 103449"] hey everybody..im new here. i just picked up a 95 YZ250. the guy i got the top and bottom end rebuild back in march of last year. he said he got it back from the dealership and fired it up and it ran for about 15min and when he would give it over 1/2 throttle it would cut out like it was getting too much fuel. well i got it anyway because of the price and it looks brand new. we could not get it to crank, my foot is killing me from kicking that thing so much. i ended up having a buddy pull me down the road on it and it fired up doing that. seemed to run good but once you would give it over half throttle it would bog down. also will not idle. i have checked the main jet and its clean. the entire carb is really clean. gas is new and mixed right, spark is good. reeds look pretty good, and the key on the flywheel looks good too. sometimes when you kick it over it will make a backfire noise. i just pulled the cover off for the power valve on the left side (if your sitting on bike). behind the cover everything was black from the oil but im sure thats common. i pulled the other piece out thats behind the cover and looked at that. it was alittle dirty but i think that is just a stop. i took an allen wrench and stuck it on there and turned, the power valve seems to not be stuck. it moves back and forth pretty easy. should i take it all apart and look even more coming in from the other side? this is just got me so confused.. feel like i have looked at everything but something isnt right. the engine has great compression and everything is new. i really want to get this going so i can ride it but i dont really have the extra money to take it somewhere to have fixed. thanks in advance, Tommy [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
just got a YZ 250. it wont crank
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