Re: Carter WGD Fast Idle Question

Posted by Ross On 2011/4/19 6:06:28

In your carb there is a little cam attached to the choke shaft in the housing behind the thermostatic coil. When your choke is closed this cam rotates with it and presents its highest point to that flat vertical bar that slides up into the housing. On a cold start, when you open the throttle the choke snaps shut. The car starts and you let off the gas. Because the choke is mostly shut, the vertical bar is held down by the cam. By means of the link you mention, the throttle is held slightly open. Once the car has warmed up, the choke swings open and that bar is no longer held down.

Now that little cam is actually spring loaded so that the choke can move as the car warms without disturbing the high idle til you blip the throttle and let it loose. I am wondering if that little spring (behind the cam) is missing or broken on yours.