09 450 jetting

im having a lot of popping on decel and i feel a hesitation when accelerating on my bike. everything is stock. have not touched a thing. i was wondering what jetting changed you southern california guys have made to get the bike running better?

i ride the motocross tracks in so. cal. (comp edge, racetown, pala) with the occasional trip to glamis

I have read that they come stock a little lean...try adjusting your fuel screw and get a larger pilot jet if needed.

If your bike is popping don't you wanna richen the main not the pilot? or am I meant to always be wrong on here? I will learn one day!

The main has no effect on decel backfire, as the throttle is closed during decel. The pilot is where the fuel would come from.

A certain amount of popping is normal, and indicates a correctly jetted pilot circuit. Excessive popping can mean either an air leak into the exhaust system (check that first) or lean idle jetting.

Check out the pilot circuit sticky at the top of the jetting forum.

Check out the pilot circuit sticky at the top of the jetting forum.

perfect :banghead:, thanks i didnt see that

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