Check your stock main jet take it up 2-3 sizes for 3/4 to full throttle.
Your needle may need to go richer.
Check your plug 1/4 to 3/4 and adjust your needle
then check the plug for 3/4 to full and see what you get.
Tan is what your looking for.
Black running rich
White running lean.
I check these after putting a pipe on a 2 stroker and usually you just need to go up on the main jets,but every sled is different.
A forum community dedicated to snowmobile owners and enthusiasts. Come join the discussion about performance, racing, troubleshooting, trails, maintenance, riding tips, modifications, classifieds, gear, and more!