Topic: 79 CB650 running 74 CB750 Carb, 5000K+ idle when I remove choke.

[Fitzy034]

Hi Everyone,

Rebuilt an old 79 CB650, running UNI Pods and stock manifold with slip-ons.  Original carb was fine at idle but I could not adjust the needle to increase my fuel as it feel flat after 1/4 throttle.

Purchased a 74 CB750 carb, when I turn the choke off it rockets to 5000RPM.  I purchased new carb boots thinking it maybe a leak and it still will shoot to 5000 once I remove the choke.

Any suggestions would be much appreciated.

Thank you,

Fitzy

[bryanj]

Or the slides are too far adjusted or tickover screw too far in