Jetting tips

Hi I am in need of some tips. I have a 2012 yfz 450 with some jetting issues. I have a 500 stroker kit on it. I've ported and polished it. Dr.d type 2003 full exhaust. I recently went from the mikuni bsr carb to the fcr carb. I' now having some hanging throttle and backfire issues. I am running a 50 pilot and a 185 main. Just need a little guidance please 

Hanging throttle sounds lean. Where is it hanging? Low end, mid range, top end? Kinda different ways to fix lol.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now