Fuel System

Air Intake System

Filtered air from the vehicle's intake ducting is metered by the electronic throttle and distributed to the two cylinder banks via an integral intake manifold.

Location Of Fuel Charge Components:

Fuel System
The fuel tank is 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 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.


Fuel Distribution
Fuel is supplied to the engine via eight fuel injectors (one per cylinder). The injectors are located in two fuel rails which run the length of each cylinder bank and are integral with the air intake manifold.

Fuel pumped from the tank enters a feed pipe at the rear of bank 2. Fuel flow is along bank 2 fuel rail, across the top front of the engine (cross-over pipe) and through bank 1 fuel rail, the unused fuel returning to the tank via a pressure regulator.

The fuel injectors are each controlled electrically from the engine control module (ECM).

A test valve is fitted to the cross-over pipe connecting the fuel rails at the front of the intake manifold. This valve allows the fuel system to be depressurized during servicing and troubleshooting.