13 53 205 Removing and installing/replacing left rail (N63)

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Electric fuel pump starts up automatically when door is opened!

Observe warning on cylinder head cover.

Disconnect NEGATIVE BATTERY TERMINAL (risk of fire due to short circuit on removal).

Carry out installation work on fuel system only with coolant temperature below 40 °C.

IMPORTANT: Wear full face guard and protective gloves.
Fuel can emerge spontaneously at high speed when the high pressure line is released!

IMPORTANT: Adhere to conditions of absolute cleanliness when working on the high-pressure fuel system.
Introduced dirt contamination can cause malfunctions in the system!

Do not allow any dirt particles or foreign bodies to get into the system.
Remove all traces of dirt contamination before removing lines or separate components.
Use only fluff-free cloths.
Seal all fuel system openings with protective caps or plugs.

Recycling:

Fuel escapes when fuel line is detached. Catch and dispose of escaping fuel.

Observe country-specific waste disposal regulations.

Necessary preliminary tasks:

Read out the fault memory of the DME control unit. If necessary, work through test schedules.
Switch off ignition.
Remove left INTERCOOLER .
Remove COOLANT EXPANSION TANK .
Remove WATER VALVE and set the coolant hoses onto the side.
Partially remove WIRING HARNESS for engine.
Partially remove WIRING HARNESS for injectors and ignition coils.
Disconnect all PRESSURE LINES on left side.
If installed:
Remove OIL RESERVOIR for hydraulic steering or dynamic drive.
If installed:

Remove suction line for hydraulic steering or dynamic drive. See SUCTION LINE FROM CONNECTING PIECE TO VANE PUMP and SUCTION LINE FROM FLUID RESERVOIR TO CONNECTING PIECE .

Unlock plug (1) on high-pressure sensor and disconnect.

Unfasten screws (2).

Tightening torque 13 53 1AZ .

Remove rail (3).

Fig 1: Identifying Fuel Rail, High Pressure Sensor With Plug And Mounting Screws

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Assemble engine
Check fuel system for leak tightness.

Delete fault memory.