Fuel System: Introduction

Fuel is stored in the fuel tank mounted across the vehicle behind the passenger compartment bulkhead.

Fuel is drawn by the fuel pump from the tank and then supplied to the two fuel rails via a filter.

Fuel injectors, controlled by the ECM are installed in the fuel rails on each side of the intake manifold.

The amount of fuel injected into the engine is controlled by the ECM.

A cross-over pipe connects the two fuel rails together at the front of the manifold.

A test valve in the cross-over pipe allows the fuel rail to be pressurized and de-pressurized during the servicing and troubleshooting procedures.

A pressure regulator on the rear of the right fuel rail controls the pressure in the fuel rails.

A return line directs excess fuel from the pressure regulator back to the fuel tank.