I have not been able to get help in the quad treads:bonk: so i thought i would ask hear do to the great help Iv gotten for my 07 wr450
. I have a 2006 Raptor 350 for my wife, last year it started not to run at idle I figured a dirty carb was the reason and turned the idle speed up of the time being. During the off season I cleaned the carb and put in a jet kit the problem was the same and I noticed a back fire pop but it was in the intake, I put the carb back to stock jetting and cleand it thourly agin to start from stock and the problem still exist, and it is this when its cold I have to leave the chock cracked and turn up the idle speed, and at a reasonable idle it pops in the intake, after a hour or too of riding the idle speed is to hi so I turn off the choke and bring the speed down but it still pops at a good idle speed. I thank it might be timing or valves what are your suggestions?