Fuel Delivery

FUEL DELIVERY
The fuel delivery system consists of:
the 2-section fuel pump module containing the electric fuel pump, fuel pressure regulator, fuel gauge sending unit (fuel level sensor) and a fuel filter located inside the lower section of pump module
- fuel tubes/lines/hoses
- A separately mounted main fuel filter
- quick-connect fittings
- fuel injector rail
- fuel tank
- fuel tank filler/vent tube assembly
- fuel tank filler tube cap
- accelerator pedal
- throttle cable

Fig.1 Fuel Delivery Components:

Certain fuel delivery components can be found in.

Fuel is picked up in the fuel tank by the fuel pump module. This module is located on the bottom of the fuel tank.

A fuel return system is provided within the fuel pump module using check valves. A separate fuel return line from the engine to the tank is not used.

The fuel pressure regulator and the main fuel filter are not combined. They are separate items.

The fuel tank assembly consists of: the fuel tank, fuel pump module assembly, fuel pump module lock ring/gasket, ORVR components. Refer to Emission Control System for ORVR information.

A fuel filler/vent tube assembly using a pressure/ vacuum, 1/4 turn fuel filler cap is used. The fuel filler tube contains a flap door located below the fuel fill cap. A one-way check valve is installed into the tanks fuel fill fitting.

Also to be considered part of the fuel system is the evaporation control system and ORVR system. This is designed to reduce the emission of fuel vapors into the atmosphere. The description and function of the Evaporative Control System is found in Emission Control Systems.

Both fuel filters (mounted to front of fuel tank, and inside the bottom fuel pump module) are designed for extended service. They do not require normal scheduled maintenance. The bottom section of the fuel pump module (with included filter) should only be replaced if a diagnostic procedure indicates to do so. Also, the fuel filter mounted to the front of the fuel tank should only be replaced if a diagnostic procedure indicates to do so.