Quote:
Originally Posted by frankensteinxj
Ive got a kx125 and it wont run.
I cant get the damn thing to start unless if i pour gas directly through the air box into the carb. And when it starts up after doin that it runs full throttle until i hit the throttle and it bogs down. It is gettin fuel out of the petcock also so i know it isnt a problem with that. And i also put a new spark plug in it yeaterday.
Any ideas? Its drivin me insane. 
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Air leak , ether cracked intake boot..non-sealing reed valves or bad crank seal.
Whats the plug look like ?