Hobbit Dr 70 kit with vm20

Hobbit 70 kit with vm20 carb and points ignition with cranks pipe. Idle jet is 17.5, main jet is 160 now. Tried 180 as well. Can't get it to idle or run worth a shit. Choked or not. Suggestions?

Re: Hobbit Dr 70 kit with vm20

Dirty30 Dillon /

Your jetting sounds good enough to idle. I honestly never had to really change the idle jet on the VM20's I've run.

Sounds like you may have an airleak somewhere.

Re: Hobbit Dr 70 kit with vm20

Did you rebuild your bottom end? Probably a bad seal

Re: Hobbit Dr 70 kit with vm20

cody rodman /

I did rebuild bottom end with new bearings and seals

Re: Hobbit Dr 70 kit with vm20

🦺🥇b to the eff /

Every vm20 I've bought has had a 22.5 idle jet, and that has worked just fine.

Want to post in this forum? We'd love to have you join the discussion, but first:

Login or Create Account