The fuel tank stores the fuel supply. An electric fuel pump, located in the
fuel tank with the fuel sender assembly, pumps fuel through an in-line fuel filter
to the fuel rail assembly. The pump provides fuel at a pressure more than is needed
by the injectors. The fuel pressure regulator, part of the fuel rail assembly, keeps
fuel available to the injectors at a regulated pressure. A separate pipe returns unused
fuel to the fuel tank.
The fuel tanks store the fuel supply. The primary fuel tank is located in the
rear of the vehicle on the left side. On dual-tank applications, the secondary fuel
tank is located in the rear of the vehicle above the spare tire. The fuel tanks are
each held in place by 2 metal straps that attach to the frame. The fuel tanks are
molded from high density polyethylene.