Installing the right high-pressure fuel rail
WARNING: This page is about a different car, the 2022 BMW X7, 2021 BMW X7, 2020 BMW X7, and 2019 BMW X7. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
TECHNICAL INFORMATION
When assembling, it is essential to observe screwing sequences and tightening torques.
Failure to comply with the regulations can lead to leaks and damage.
When assembling, it is essential to observe screwing sequences and tightening torques.
Failure to comply with the regulations can lead to leaks and damage.
NOTE:
The description is provided only at one component. The procedure is the same for all other components.
- Loosen screw (1).
- Slacken hold-down device (2).NOTE: TECHNICAL INFORMATION
Always install the high pressure line or rail free of distortion. To ensure distortion-free installation of the high pressure line and to avoid damaging the thread, it must be possible for both nuts to be screwed on to the injectors easily hand force. - First insert the high-pressure fuel rail at the high pressure pump connector, then lower to the point where the ball heads are positioned inside the injector connections and the high-pressure fuel rail is correctly positioned.
- Then tighten the nuts (1) on the injectors so they are hand-tight.
- Next, hand-tighten the nut (2) of the high pressure pump.
- Lastly, mount screws (3) and hand-tighten.
- Tighten down screws (3).TIGHTENING TORQUE SPECIFICATIONS
Rail to cylinder head cover M6x25 screw Tightening torque 10 Nm - Tighten the screws (1) the hold-down device.TIGHTENING TORQUE SPECIFICATIONS
Hold-down device to cylinder head cover screw Tightening torque 13 Nm - Tighten nuts (2) on the injectors with the special tool 0 495 908 (37 1 150)
.TIGHTENING TORQUE SPECIFICATIONS
High-pressure rail to injectors Nuts Tightening torque 23 Nm - Tighten nut (3) on the high pressure pump with the special tool 0 491 277 (13 5 020) .
TIGHTENING TORQUE SPECIFICATIONS
| Fuel supply line/rail to high pressure pump | ||
| Nut | tightening torque | 30 Nm |
Follow-up work
- Refer to PARTIALLY ATTACHING THE WIRING HARNESS TO THE RIGHT CYLINDER HEAD COVER .
- Refer to INSTALLING THE IGNITION COILS OF CYLINDERS 1 TO 4 .
- Refer to INSTALLING THE INTAKE PIPE OF CRANKCASE VENTILATION .
- Refer to INSTALLING THE RIGHT UNFILTERED-AIR DUCT .
- Refer to INSTALLING THE HOLDER FOR THE DIGITAL MOTOR ELECTRONICS CONTROL UNIT ON THE RIGHT .
- Refer to INSTALLING COVER FOR THE RIGHT DME CONTROL UNIT .
- Refer to INSTALLING THE TENSION STRUT ON THE RIGHT SHOCK TOWER .
- Refer to INSTALLING RIGHT CLEAN AIR PIPE .
- Refer to CONNECTING THE RIGHT CHARGE AIR LINE TO THE EXHAUST TURBOCHARGER .
- Refer to INSTALLING INTAKE FILTER HOUSING .
- Refer to INSTALLING THE RIGHT STRUT BRACE .
- Refer to INSTALLING THE STRUT BRACE .
- Refer to INSTALLING ACOUSTIC COVER .
- Refer to DISCONNECTING ALL BATTERY GROUND LEADS .