OregonEXrider
07-10-2004, 01:28 PM
What I have is a 400ex. The things I have done: Removed spark arrestor/stock baffle thing at end of exaust hole, removed airbox lid, I pulled the main jet jet and it was a 148. I picked up a158 and put it in. Ran it for a few trips. Great power difference, it really noticeable. I pulled the plug and it had a light grey color to it. But I started to notice the exaust started popping like a backfire on de-acceleration.......
I bought a white bros air filter and a 162 main jet. I figured if it was to rich that a 160 would be about perfect. With the 162 if I push the throttle down super fast right off throttle the quad dies. If I push down slowly or just semi fast it doesnt die. I did a search and it sounds like maybe I need to adjust some sort of needle in the carb or buy a different pilot jet or something?
Anyway if you guys could let me know what you think, and also how I get to the needle clip and the pilot I would appreciate it.
thanks
shawn
PS
I ride the dunes and am right at sea leval if that makes a difference.
I bought a white bros air filter and a 162 main jet. I figured if it was to rich that a 160 would be about perfect. With the 162 if I push the throttle down super fast right off throttle the quad dies. If I push down slowly or just semi fast it doesnt die. I did a search and it sounds like maybe I need to adjust some sort of needle in the carb or buy a different pilot jet or something?
Anyway if you guys could let me know what you think, and also how I get to the needle clip and the pilot I would appreciate it.
thanks
shawn
PS
I ride the dunes and am right at sea leval if that makes a difference.