[MXStyle87]

Alright, I started the motor up and it ran great. Then I tore the quad apart to put a twist throttle on, put everything back on, and it was hard to start so i put the PRI on for a little and it started. Bad choice. So i thought i flooded it and took the spark plug off it was pretty black, but i didnt think it was that bad. It runs, but it stalls everytime i hit the gas and it misfires every so often. Could the spark plug really make this difference. Im gonna change it, but havent gotten one yet. I just hope its not something else.

 

[aproy]

it could definately be the spark plug. if you dont give the bike a chance to warm up and start it and hit the gas it will make a KKHHSSST sound when it stalls. the plug could get fouled very easily in this case, making the bike almost impossible to not only start but keep running. i bet if you change the plug youll be fine.