Re: Carter WDO help. This thingy!

Posted by TxGoat On 2023/4/30 20:23:23

I believe that is the accellerator pump check valve. If the accellerator pump nozzle goes on the threaded hole near the red line, i believe the needle is dropped into the hole, point down, and the ball is dropped on top it, then the pump nozzle is installed using the correct screw. The purpose of the needle and ball is to prevent carburetor vacuum for syphoning gasoline through the accellerator pump nozzle at higher speeds. (That's what I think it is. A good diagram of your carburetor would be helpful, if one can be found.)