Hey all,

Does anybody have or know about the Carter AFB Competition carbs. It seems my choke is working incorrectly and I am unsure what I am looking for. I know there was another thread on choke adjustment but I cannot find anything that resembles the parts described.

The carb is clean and all parts seem to move freely. But the first time I start the motor, to my knowledge, the butterfly should slam shut thereby engaging fast idle, but it is not doing any of that.

Any help would be greatly appreciated, I know I can just sit on the gas and get it running that way but I would love to fix the problem properly.

Thanks!

What kind of choke? They can have electric chokes, hot air chokes, automatic (bi-metallic spring) chokes. Each can adjust differently. If your AFB doesn't have the round plastic adjustable choke on the right front that adjusts by rotating it, you should be able to adjust the choke rod by carefully bending it.

I am not sure what kind of choke it would be. The car is a 72 350 if that helps. Which rod would be the one you speak of?

I believe one rod attached to the butterfly has a dog-leg shape to it. It takes slightly changing the angle of the dog-leg which changes how open or closed the butterfly sets itself. You should also have a fast idle screw to adjust in conjunction with the choke once it's set. It's been a while since I've worked with an AFB and am working from memory.

I know Edelbrock also clones the AFB...the procedure should be the same if you check one of them out with a manual choke.

The thing that I am not following is the butterfly sits in the same position at all times. So how would changing the angle help?

Is there a mechanism that detects the temperature of the engine, or does the choke come on every time you start the car regardless of the temperature?

I am fairly carb challenged, I have always been a little intimidated by them so I really am uneducated here.

Thanks in advance!!

I don't know what style choke a '72 used (if you have the original intake manifold). Your car came originally with a Q-Jet anyway most likely. There was originally some kind of choke for the Q-Jet that likely wouldn't fit to your AFB. I think you'll need to find an appropriate choke and hook it up or install a manual choke cable you can control from inside the car. You can buy an electric choke from Edelbrock that attached to their AFB clones, so it may well work.