212 predator sputering


New member
My predator has been sputtering at mid to high rpm, my guess is the main jet needs to be bigger. What do you guys think?

Mods are:
governor removed
arc rod
mod 2 cam
arc flywheel
18lb springs
1.3 ratio rockers
mudboat pipe
hi-flow filter
Low speed is stock i guess, i took out the main jet and drilled it out some so im not very sure what exactly the size would be.
If you running gas drill the low speed with a #77 drill bit and the high speed with a #65. The best way to do it is to start small and take a plud reading after drilling.
Correct. When drilling make sure that you only drill through the jet and not the entire plastic piece. You do not want a hole in the top of it.