Fuel Rail: Locations

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
3 - Support ring
4 - 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.
- Do not install fuel lines with tension
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
- 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".