Pilot and needle setting

[chevybanshee350]

I understand u do a plug chop to figure out your main jet size, but how do u guys figure out your needle,pilot, and air screw settings.

[chevybanshee350]

No one can help

[firebanshee]

I understand u do a plug chop to figure out your main jet size, but how do u guys figure out your needle,pilot, and air screw settings.

You figure it out by how your bike runs. You only use your main jet at 3/4 throttle and above,your pilots come into play at off idle to 1/4 throttle and your needle is from 1/4 to 3/4. You also use your air screw to help fine tune these adjustments. So if you have a bog off idle then you need to figure out if it is bogging from being rich or lean, you can use your choke to help figure this out.This would be a pilot jet or air screw issue, if you have a issue in the mid section of your power band then you would try moving your needle up or dowm(up is richer moving clip down).If you have a issue at wot then it would be a main jet issue. Your choke can really help you figure out if you are lean or rich, if choke helps then you are lean, if it makes it worse than you are rich. You have to make sure that you don't have any air leaks so you don't try to jet to cover up another problem, also you have to rule out ignition problems like bad plugs or plug caps or other ignition problems.

[GrMeyer]

http://www.dfn.com/benkaren/jetfaq.html