dirtynogood
Member
i recently bought this bike from my cousin,a 94 YZ250,he has ran it alot,but has also taken good care of it. i was resently out riding when in the middle of the ride it wouldn't hit the powerband anymore. it runs fine and revs up fine in nuetral.when i try to crack it ,all it does is bog a little and through a little black smoke.it is almost like the choke is stuck.i have changed the reeds, cleanded the power vaulve.my cousin just changed the piston,rings,and all the inside so iknow those are in good shape.i do have to change the head gasket. but other than that i am stumped.lif anyone has any thought on the matter, any info would be helpfull,thanks