Re: Carter WGD Fast Idle Question

Posted by Ross On 2011/4/27 13:12:16

The purple piece is cam shaped. As it rotates with the choke shaft it presents a higher profile to the green piece. When the choke opens the purple piece again presents a low profile to the green piece which allows the blue piece to come up higher and you are back to slow idle.

Further, the purple piece is spring loaded to the choke shaft so that it can but must not rotate with the choke. This allows the choke to warm up and reopen while the engine is on fast idle without losing the fast idle. You are just going to have to look at the mechanism closely.