i just got a 99 900rr.. the guy i got it from put a used motor on it .. he couldnt get it to run right.. i put new plugs took carbs off cleaned them.. it barely wants to run wont idle without the choke on sounds like it has a miss.. it wont rev over 3000 with out dyin..i checked spark has it in all for but looks kinda weak.. any suggestions thanks

 

Carbs are either way out of wack (which is what I think it is) otr you might have a problem with timing. Good luck!

Peace

 

nevermind figured it out.. it was the screen inside the gas tank

 

what was wrong with the screen???

 

it was colapsed in the middle