Fuel Tank: Description and Operation

FUEL TANK
The fuel storage tank is made of steel and is coated internally with a special corrosion inhibitor at the rear of the underbody. It is held in place by two metal straps. Anti-squeak pieces are used on top of the tank to reduce rattles. The fuel pump and fuel level sending unit assembly are mounted in the fuel tank as one assembly. The fuel tank assembly also consists of the fuel filler neck and filler cap.

FUEL FILLER NECK
To prevent refueling with leaded fuel, the fuel filler neck has a built-in restrictor and deflector. The opening of the restrictor will accept only the smaller unleaded gasoline nozzle which must be fully inserted to bypass the deflector. Attempted refueling with a leaded fuel nozzle will result in fuel splashing back out of the filler neck.

FUEL TANK FILLER CAP
The fuel tank filler neck is equipped with a screw type cap. The threaded part of the cap requires several turns counterclockwise to remove. The long threaded area was designed to allow any remaining fuel tank pressure to escape during the cap removal operation. A ratchet type torque limiting device prevents over-tightening. To install, turn the cap clockwise until a clicking noise is heard. This signals that the correct torque has been reached and the cap is fully seated.

FUEL AND VAPOR PIPES
The fuel feed and return pipes extend from the fuel pump and sender unit to the injector assembly unit and are routed along the frame side member. The pipes are secured with clip and screw assemblies. Both fuel feed pipes and return pipe must be properly routed and retained, and should be inspected occasionally for leaks, kinks, or dents. If evidence of dirt is found in the fuel injector assembly or fuel filter during disassembly, the pipes should be disconnected and blown out.

The vapor pipe and hoses extend from the fuel pump and sender unit to the EVAP canister.