13 53 208 Removing and installing/replacing right rail (N63)

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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 work

Read out the fault memory of the DME control unit. If necessary, work through test schedules.
Switch off ignition.
Remove right INTERCOOLER .
Remove ELECTRONICS BOX .
Partially remove WIRING HARNESS for engine.
Partially remove WIRING HARNESS for injectors and ignition coils.
Disconnect all PRESSURE LINES on right.

Unlock plugs from high-pressure fuel sensor with a long screwdriver.

Fig 1: Unlocking High-Pressure Fuel Sensor Plugs Using Long Screwdriver

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug (1) from high-pressure sensor.

Unfasten screws (2).

Tightening torque 13 53 1AZ .

Remove rail (3).

Fig 2: Identifying Fuel Rail, High-Pressure Sensor Plug And Mounting Screws

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Assemble engine

Check fuel system for leak tightness.

Delete fault memory.