Honda Ride Red
05-04-2005, 07:03 PM
Alright i got a 04 400ex i took the lid off my airbox and put in a 42 pilot and 152 main. started going through plugs because it was runnin rich so i put a slip on w/b e-series pipe. ran great for like 3 days now it backfires while trying to start and when its at idle. when i punch the throttle it backfires while going. not real sure what to do. i have the idle screw turned out about as far as it goes, because i took out the choke. maybe i need a bigger pilot jet but i thought for sure 42 would be big enough. i live in wisconsin and the weather right now is like 60degrees so its not cold out. thanks for the help