ok i put a new motor on my bike a couple weeks back, it fires up first time every time but it wont take the gas quick it dies out but if you just ease in the gas it will take it...ive changed tps sensor, plugs. has good gas and throtle bodies are clean....so now im stuck if you got somethin i could try lemme know because i've tried everything

 

get a new fuel pump

 

it primes and builds pressure, im not doubtin you but what makes you say fuel pump

 

i went through the same thing with my f4i, it would cut out or sputter real hard if i opend up the throttle all the way but was build rpm's normal if i was slow with the throttle, i tried all sorts of **** and then i replaced the fuel pump and it went away.

 

fuel pump had same prob on mine. only i forgot to plug it in..

 

i bought the mootr i think it had been sittin up for a while and the gas i ran was a little old so i cleaned the plugs and ran some of that sea foam stuff threw it and today is its 3rd day at the spot and its runnin like a champ. preciate the help

 

buy my circle button

 

ur circle button is broke....

 

sea foam is da shiznit, but smokes so bad. a other trick is to run marvels mystery oil......check it out, can run it in ure motor to kill deposits or gas to clean out fuel lines and gunk:YEAH

 

no cant buy ur circle button dont wana be cool like you