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13 53 332 Removing and installing/replacing feed line (N54)

Special tools required: 

WARNING: Disconnect NEGATIVE BATTERY TERMINAL (risk of fire due to short-circuiting on removal).
Electric fuel pump starts up automatically when door is opened!
Carry out installation work on fuel system only with coolant temperature below 40°C.

Wear protective goggles.

IMPORTANT: Adhere to conditions of absolute cleanliness when working on the high-pressure fuel system.
Introduced contaminants 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 before removing pipes or individual components.
  • Use only fluff-free cloths.
  • Seal all fuel system openings with protective caps or plugs.
IMPORTANT: Ignition coils must not be fouled by fuel.
The resistance of the silicone material is reduced significantly by contact with fuel, which may cause the ignition coil to fail!
Cover ignition coil with suitable means.

Necessary preliminary tasks: 

Recycling: 

Fuel escapes when fuel lines are detached.

Catch and dispose of escaping fuel in a suitable container.

Observe country-specific waste-disposal regulations.

Unlock plug (1) and remove.

Unlock and detach fuel line (2).

Catch and dispose of escaping fuel.

Fig 1: Identifying Connector And Fuel Line
G04755094Courtesy of BMW OF NORTH AMERICA, INC.

Seal fuel lines with special tools 13 5 281 and 13 5 282 .

Fig 2: Sealing Fuel Lines Using Special Tools 13 5 281 And 13 5 282
G04755095Courtesy of BMW OF NORTH AMERICA, INC.

Slacken nut (1).

Release screw (2).

Remove feed line (3).

Fig 3: Identifying Feed Line, Screw And Nut
G06904521Courtesy of BMW OF NORTH AMERICA, INC.

Close off feed line and high-pressure pump with a matching plug from special tool kit 32 1 270 .

Fig 4: Sealing Feed Line With Matching Plug From Special Tool Kit 32 1 270
G04755097Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Follow sequence of screw connections:

  1. Tighten down nut (1) with special tool 13 5 020 .

    Tightening torque 13 53 6AZ .

  2. Tighten screw (2). Replace aluminium screw.

    Tightening torque 13 53 9AZ .

Fig 5: Identifying Feed Line, Screw And Nut
G06904521Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check fuel system for leaks.

Check function of DME.

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