The bike runs fine, and then it starts to decelerate, even when i hold the throttle down all the way it still goes down till it stalls. The fuel seems to be comming out fine. I changed to of the outer spark plugs because I couldnbt get to the middle two and didnt want to mess with it any more. But if it was the plugs i would think that it would be running rough from the start.

 

i had a similar problem today... while i was riding the throttle response was delayed and my engine shut off...
and i ve been having hard time starting it up again....and would really have to give it some throttle and increase the idle rpm to get the motor going....
im a newb and not sure wehre to start....???

any help?

somone suggested to check the fuel filter...whihc i have no idea how to do///

 

Maybe your jets are clogged related to sitting up all winter.