Fuel Rail Assembly Overview

Fuel Rail Assembly Overview





1 - Radial adjustment

• Replace if damaged

2 - Fuel injector

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

• Replace O-rings

• Note correct installation position

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

3 - Support ring

4 - Fuel rail

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

5 - Fuel Pressure Sensor (G247 )

• 22 Nm

• Tighten connections to 30 Nm

6 - Low Fuel Pressure Sensor ( G410)

• 15 Nm

7 - Fuel Pressure Regulator Valve (N276)

8 - Mechanical single-piston high-pressure pump

• With Fuel Pressure Regulator Valve (N276) and Low Fuel Pressure Sensor (G410)

• An electrical fuel pump, located in the fuel tank, supplies fuel to the mechanical high-pressure pump at a pressure of approximately 6 bar.

• When installing the high-pressure pump, make sure that no dirt enters the fuel system.

• The fuel system must be pressureless to install the high-pressure pump, releasing fuel pressure, refer to => [ Before Opening High Pressure Fuel Injection System ] Service and Repair

• Do not install fuel lines with tension

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

9 - Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80)

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

• With Throttle Drive Angle Sensor 1 (for Electronic Power Control (EPC)) (G187) and Throttle Drive Angle Sensor 2 (for Electronic Power Control (EPC)) (G188)

• After replacing the Throttle Valve Control Module (J338), it must be adapted to the Engine Control Module (ECM) (J623) again (basic setting, display group 60) see " Guided Fault Finding"

11 - Intake Air Temperature (IAT) Sensor 2 (G299)

• Tighten to 5 Nm

12 - Bolts for intake manifold

• 9 Nm

13 - Intake manifold

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

• The intake manifold runner position sensor (G336 ) item 10 must be adapted to the engine control module (J623) after removing or replacing the intake manifold vehicle diagnosis, testing and information system (VAS 5052 ) "Guided Function".