muddy400EX
06-09-2005, 09:18 PM
when i jetted my quad for my exhaust i put in what i thought was a 165 main jet. but a couple of weeks ago it was popping at high RPM's and i had no power at all. i took out the plug and it was pitch black so i took out the main jet and after looking at it closely im almost sure that it was a 185! i put a 155 in and it stills pops a little bit at high RPM's and the plug is still black:confused: im runnin an HMF slipon, k&n filter, 155 main and the needle is 2nd clip from the bottom right now. should i mess with the needle or lean out the main jet more?