Can you tell me how to lower idle RPM on a Holley 4500 66 BB when auto choke kickes in the morning.
There must be a adj. screw for RPM (choke only)? Can't find it. Don
There must be a adj. screw for RPM (choke only)? Can't find it. Don
-
-
Re: carburetor
if this carb uses a divorce type choke,spring in the intake manifold and a rod to the choke you need to bend the arm that is attached to the primary throttle shaft where it makes contact to the fast idle cam. it has a slot where you can insert a screwdriver to do this -
Re: carburetor
Here's what you're looking for - note the screwdriver slot in the metal tang resting against the plastic fast idle cam; twist the tang clockwise to increase/counter-clockwise to decrease the rpm at any position against the cam. Earlier carbs had an adjustment screw, replaced on later carbs by the bendable tang.
Comment
Comment