13 53 Fuel Injection Nozzles and Pipes
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2010 BMW 335xi, 2010 BMW 335i, 2009 BMW 335xi, 2009 BMW 335i, and 2008 BMW 335xi. However, it is still accessible from the selected car via links, so may be relevant.
FUEL INJECTION NOZZLES TIGHTENING SPECIFICATION
| - | Type | Thread | Tightening specification | Measure | |
|---|---|---|---|---|---|
| 1AZ | High-pressure rail to cylinder head | N54, N53 | M7 x 16 | - | 13 ± 2 Nm |
| 2AZ | High-pressure line to cylinder head | N54, N53 | M7 x 16 | - | 13 ± 2 Nm |
| 3AZ | High-pressure fuel sensor | N54, N53 | M10 | - | 30 - 5 Nm |
| 4AZ | Low-pressure fuel sensor | N54, N53 | M10 | - | 20 - 3 Nm |
| 5AZ | Holding-down element to cylinder head | N54, N53 | M7 x 20 | - | 13 ± 2 Nm |
| 6AZ | Feed line to high-pressure pump | N54, N53 | M14 | Special tightening torque! | 23 ± 3 Nm |
| 7AZ | High-pressure line to rail and high pressure pump | N54, N53 | M14 | - | 30 ± 3 Nm |
| 8AZ | High-pressure lines to rail and injector | N54, N53 | M12 | - | 23 ± 3 Nm |
| 9AZ | Fuel feed line | N54, N53 | M8 x 17 | Replace screw | - |
| - | - | - | 1. Tightening | 10 Nm | |
| - | - | - | 2. Angle-of-rotation tightening | 90° ± 15° | |
| 10AZ | Bracket, fuel line, to engine support frame | N54, N53 | M6 x 12 | - | 8 Nm |
| 11AZ | Fuel line to fuel rail | N51 | M14 | - | 30 ± 6 Nm |