Fuel Rail Overview

Fuel Rail Overview






1 - Fuel Injector

• With combustion chamber seal (Teflon(R) seal), always replace

• Replace O-rings

• Note correct installation position

• Removing and installing, refer to => [ Fuel Injectors ] Fuel Injectors

2 - Support Ring

3 - Roller Tappet

4 - Fuel Pressure Regulator Valve (N276)

5 - High Pressure Pump

• With fuel pressure regulator valve

• There is an electric fuel pump located in the tank that supplies the fuel to the mechanical high pressure pump.

• When installing, make sure that no dirt enters the fuel system.

• The fuel system must be without pressure to install the high-pressure pump, releasing fuel pressure refer to => [ Releasing Pressure in the High Pressure Area ] Releasing Pressure In the High Pressure Area

• Install the fuel lines free of tension

• Removing and installing, refer to => [ High Pressure Pump ] High Pressure Pump

6 - High Pressure Pump Bolts

• 20 Nm

7 - Bolts

• 9 Nm

8 - Fuel Supply Line Connectors

• 40 Nm

• Replace

9 - Fuel Supply Line Union Nut

• 20 Nm

10 - Bolts

• 9 Nm

11 - Channel Separating Plate Vacuum Diaphragm (intake manifold flaps)

12 - Throttle Valve Control Module (J338) , Electronic Power Control (EPC) Throttle Drive (G186)

• EPC throttle drive angle sensor 1 (G187) and EPC throttle drive angle sensor 2 (G188)

• After replacing the throttle valve control module, it must be adapted to the Engine Control Module (ECM) (J623). Use a vehicle diagnosis tester.

• 7 Nm

13 - Intake Air Temperature *(IAT) Sensor (G42)

• 5 Nm

14 - Intake manifold

• Removing and installing, refer to => [ Intake Manifold with Fuel Rail ] Intake Manifold With Fuel Rail

15 - Manifold Absolute Pressure (MAP) Sensor (G71)

• 9 Nm

16 - Intake Manifold Runner Position Sensor (G336)

• If the intake manifold runner position sensor is being replaced, then it will be necessary to adapt the intake manifold runner position sensor to the ECM. Use a vehicle diagnosis tester.

17 - Gasket

• Replace

18 - Channel Separating Plates (intake manifold flaps)

19 - Fuel Pressure Sensor (G247)

• 27 Nm

• Coat the threads with clean engine oil.

• Component Locations Overview

• Removing and installing, refer to => [ Fuel Pressure Sensor (G247) ] Service and Repair

20 - Fuel Rail

• Removing and installing, refer to => [ Intake Manifold with Fuel Rail ] Intake Manifold With Fuel Rail

• 9 Nm