Fuel Delivery System
DESCRIPTIONThe fuel supply is stored in the fuel tank. An electric fuel pump, inside the modular fuel sender assembly (inside the fuel tank) pumps fuel through an in-line fuel filter to the fuel rail assembly. The pump provides fuel at a pressure above the regulated pressure needed by the injectors. A pressure regulator, an integral part of the fuel rail assembly, keeps fuel available to the injector at a regulated pressure. Unused fuel is returned to the fuel tank by a separate pipe.
Unleaded fuel must be used with all gasoline engines for proper emission control system operation. Using unleaded fuel will also decrease spark plug fouling and extend engine oil life. Leaded fuel can damage the evaporative emission control system, and its use can result in loss of emission warranty coverage.