Fig. 10.2. Removing the fuel pump from the fuel tank on vehicles with Zetec-SE and Endura-E engines
Fuel pump - in the Ford Fiesta is elastically fixed directly to the fuel tank (Fig. 10.2). The pump has an electric drive and forms a single assembly unit together with the fuel level sensor. A safety valve in the pump body diverts excess fuel and fuel vapors back into the fuel tank. At the same time, the valve maintains pressure in the fuel system when the ignition is off.
Fuel filter - filters liquid and solid non-combustible fuel ingredients; installed in front of the fuel distribution line.
Fig. 10.3. Elements of the fuel vapor recovery system: 1 – outlet ventilation hose from the fuel tank; 2 – tank with activated carbon (absorber); 3 – cylinder head; 4 – suction pipe; 5 – fuel vapor recovery system control electromagnetic valve
Activated carbon tank (absorber) - traps fuel vapors in the ventilation hose. Depending on the engine load, the control unit opens the vacuum hose to the suction pipe via the electromagnetic valve, fuel vapors are forcibly sucked out of the absorber and, mixing with the fresh fuel-air mixture, are burned in the combustion chambers (Fig. 10.3). The absorber is installed in the engine compartment.