13 53 Fuel Injector Nozzles and Lines (N20, N26)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2016 BMW 328i xDrive, 2016 BMW 328d xDrive, 2015 BMW 328i xDrive, 2015 BMW 328d xDrive, and 2014 BMW 328i xDrive. However, it is still accessible from the selected car via links, so may be relevant.
TIGHTENING TORQUE SPECIFICATIONS - FUEL INJECTOR NOZZLES AND LINES
| Type | Thread | Tightening specifications | Dimension | ||
|---|---|---|---|---|---|
| 1AZ | Fuel high-pressure sensor | N20/N26 | Oil threads and pins | 30-5 Nm | |
| 2AZ | Feed line to high pressure pump | N20/N26 | M14 | Lubricate outer threads. | 30±3 Nm |
| 3AZ | Feed line to cylinder head | N20/N26 | M7 x 18 | 13±3 Nm | |
| 4AZ | Rail to cylinder head | N20/N26 | K7 x 30 | 7±1 Nm | |
| 5AZ | Hold-down device to cylinder head | N20/N26 | M7 x 90 | Hexagon screw | 13±2 Nm |
| M7 x 90 | Hexagon screw with ground connection | 13±2 Nm | |||
| 6AZ | High pressure lines to injectors | N20/N26 | M12 | Lubricate outer threads. | 23±3 Nm |
| 7AZ | High pressure line to rail and high pressure pump | N20/N26 | M14 | Lubricate outer threads. | 30±3 Nm |
| 8AZ | Special tool 13 0 320 on injector shaft | N20/N26 | M6 | 8 Nm | |