popping exhuast

[djgrooven]

Hey Guys, I was wondering if any one can help me out.
When I have the throttle wide open and let go of the throttle my 400 pops or backfires. I have a fmf powerbomb pipe and a fmf powercore4 silencer. My Carb's main jet is @ 152 and the pilot jet is stock. Any solutions so I can stop this popping noise..

[Predfan]

Sounds like you need to go up 1 or 2 sizes on your pilot jet. Also, be sure to adjust your fuel mixture screw

[BLEEDRED]

Lean for sure...


Sounds like you need to go up 1 or 2 sizes on your pilot jet. Also, be sure to adjust your fuel mixture screw

Do what he said...

But I might bump that pilot up to a 42. Adjust fuel/air screw slightly out to richen. Stock adjustment on the fuel/air screw is 2.25 turns out from lightly seated.