We will be posting some "tutorials" (if you are interested???) on Weber carburetors and we are starting with the pump/acceleration circuit on the legendary Weber DCOE.
Have you ever wondered how it works? Look, it's very simple.
The lever (25), by means of the connecting rod (27), acts on the piston (26). When the butterflies close, the piston rises and fuel is drawn from the tank into the pump cylinder through the suction valve (23).
By opening the butterflies, the connecting rod (27) remains free and the piston (26) is pushed downwards by its spring (28).
Fuel is pushed through the conduits via the delivery valve (21) to the pump jets (24) and then injected into the carburetor conduits.
The suction valve (23) is provided with a calibrated hole ensuring the return to the tank of the fuel delivered in excess by the accelerator pump.
You will of course find all these items in our shop
