Bruce Wingate
Full Access Member
- Joined
- May 20, 2021
- Posts
- 154
- Reaction score
- 89
- Location
- Long Island
- First Name
- Bruce
- Truck Year
- 1984
- Truck Model
- K10
- Engine Size
- 350
I am trying to figure out how the choke / fast idle work on a Quadrajet carb. Chevy 350 SBC, no EGR/emissions. Carb has electric choke which works.
I set idle and high idle the other day to 750 and 1200. Today I started the engine cold: one pump of the accelerator pedal and a short spin of the starter. Choke plate was closed and slowly opened, but the RPMs never dropped (it actually went up a bit). I'm used to manual bike chokes and the choke on my VW Bug. The bug choke system has a fast idle cam that slowly clicks down and the rpms drop. I expected the quadrajet to work the same - am I wrong or does the fast idle cam need some sort of adjusting.
BTW: if I blip the throttle, the idle drops down to curb idle
I set idle and high idle the other day to 750 and 1200. Today I started the engine cold: one pump of the accelerator pedal and a short spin of the starter. Choke plate was closed and slowly opened, but the RPMs never dropped (it actually went up a bit). I'm used to manual bike chokes and the choke on my VW Bug. The bug choke system has a fast idle cam that slowly clicks down and the rpms drop. I expected the quadrajet to work the same - am I wrong or does the fast idle cam need some sort of adjusting.
BTW: if I blip the throttle, the idle drops down to curb idle