Fuel Rail With Injectors, Disassembling and Assembling

Fuel Rail With Injectors, Disassembling And Assembling







NOTE: To prevent damage to the catalytic converter, the fuel system must be bled after work is performed on fuel rail or on fuel lines. Vehicle must only be started after bleeding.

1. Hex head bolt - 10 Nm
2. Protective cap
3. Bracket
- Ensure it is positioned correctly on injector and fuel rail
4. Intake manifold
- With Throttle Valve Control Module -J338-
- With Intake Air Temperature (IAT) Sensor -G42-
5. Insert for injector - 3 Nm
- Install with locking fluid D 000 600 A2
6. O-ring
- Replace
- Moisten with clean engine oil
7. Fuel injectors
- Cylinder 1 -N30-
- Cylinder 2 -N31-
- Cylinder 3 -N32-
- Cylinder 4 -N33-
8. O-ring
- Replace
- Moisten with clean engine oil
9. Fuel supply line
- For vehicles up to 06.03, tighten union nut to 22 Nm
- Loosening and tightening union nut in vehicles as of 07.03, see Fig. 1.

WARNING: Fuel system is under pressure. Before opening system, place rags around the connection point. Then release pressure by carefully loosening connection.

10. Fuel rail
11. Connector
- For injectors
- 4 pieces







Fig. 1 Loosening and tightening union nut for fuel supply line in vehicles as of 07.03

WARNING: Fuel system is under pressure. Before opening system, place rags around the connection point. Then release pressure by carefully loosening connection.

- Loosening
- Unscrew fuel hose from connection on fuel rail pipe. To do so, counterhold using an open-end wrench at each hex head -1- and -3- and unscrew union nut -2-.

Tightening
- Secure fuel hose to connection on fuel rail pipe. To do so, counterhold using an open-end wrench at each hex head -1- and -3- and tighten union nut -2- to 22 Nm.