The Mazda 929 fuel system consists of the carburetor, fuel pump, fuel filter, fuel tank, fuel line, accelerator linkage and air cleaner.
The fuel tank is installed in the luggage compartment. By the suction of the fuel pump, the fuel flows through the fuel line into the fuel filter. The fuel passes through the filter element from the outside to the inside of the element. During this fuel flow, the filter element cleans out all the dirt. The fuel pump is producing a constant controlled pressure, and the fuel volume required for engine operations. The fuel supplied by the fuel pump flow passing through the fuel hose into the carburetor.
The carburetor mixes the air and fuel in varying proportions for different operating conditions. As the air passes through the carburetor before entering the engine, fuel is supplied into the engine through the various circuits of the carburetor.
The air cleaner operates primarily to remove dust and dirt from the air which is drawn into the carburetor and the into the engine. The following schematic shows the Mazda 929 Fuel Pump Circuit Diagram. (click image to enlarge)