Engine over-revving at idle

[Tmac897]

New engine rebuild. Engine starts fine, but immediately starts accelerating. Tach is not working yet, so hard to tell how fast it’s running. But obviously much faster than a normal idle speed. I’d estimate at least 3000 RPMs. I haven’t run it for more than a few seconds at a time yet, since no break-in yet.

Throttle cable seems to be installed properly. Idle speed adjustment seems fine. Idle mix at about 1 full turn.

[Hawksfield]

Hi
Close the throttle stop to get started then you can adjust individual carbs and balance
Good luck thats if you have webers

[Tmac897]

Hi
Close the throttle stop to get started then you can adjust individual carbs and balance
Good luck thats if you have webers

Yes, I have Webers. Idle speed screw - don’t I feel like an idiot.