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Discussion Starter · #1 ·
400ex breaks up around half too full throttle then will die. Also gas pouring out of overflow while running
 

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Breaking up sounds like main jet too small or clogged. Did you clean the carb on it yet?
 

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Discussion Starter · #3 ·
Not yet would that cause over flow too? But thats what he suspected
 

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Not yet would that cause over flow too? But thats what he suspected
It shouldn't but if there is dirt in there to clog a jet, there is probably dirt in there to make the floats or float needle stick open.
 

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Gas pouring out of the overflow means the floats are stuck or broken. Give the carb a good cleaning and see where that gets you.
 

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fixed thank you guys he was posting for me thank you
 

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Discussion Starter · #8 ·
The person we bought it from put the metal piece you slide the air filter on backwards soo it couldnt get any air!! :icon_ laughup:
 
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