In this video, I'll run through the 5 adjustments you can make to the choke system on your Electronic Rochester Quadrajet or Dualjet carburetor. We'll run how the choke system works during a cold startup, and I'll show you the comments you can adjust to ensure smooth starts.
Contents:
0:00 Intro
0:39 What it does
2:38 Choke Stat Lever
5:20 Fast Idle Screw
5:56 Primary Vacuum Break
7:09 Secondary Vacuum Break
8:26 Unloader
![](https://i.ytimg.com/vi/aAyCDHkQv3g/mqdefault.jpg)