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13 53 332 Removing and installing/replacing feed line (N20)

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Special tools required: 

WARNING: Disconnect NEGATIVE BATTERY TERMINAL (risk of fire due to short circuit 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 safety 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 lines or separate components.
  • Use only fluff-free cloths.
  • Seal all fuel system openings with protective caps or plugs.
IMPORTANT: Ignition coils must not be contaminated 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.

Release screw (1).

Lever out cable clip (2).

Remove cover (3).

Fig 1: Identifying Cable Clip, Screw And Cover
G09943757Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Undo screw (2) from cable clip (3) at rear.

Lift out cable clip (3).

Fig 2: Identifying Cable Clip And Screws
G09945872Courtesy of BMW OF NORTH AMERICA, INC.

Detach the fuel line at the snap fastener (1).

Release bolt (2) at rear of cylinder head.

Tightening torque: 13 53 3AZ .

Fig 3: Identifying Snap Fastener And Bolt
G09914505Courtesy of BMW OF NORTH AMERICA, INC.

Close fuel lines with special tools (1) 13 5 161 and (2) 13 5 162 from special tool set 13 5 160 .

Fig 4: Identifying Fuel Lines
G06904513Courtesy of BMW OF NORTH AMERICA, INC.

Slacken nut (1).

Tightening torque: 13 53 2AZ .

Release the feed line from the clamp (2), thread out toward the top and remove.

Fig 5: Identifying Feed Line From Clamp And Slacken Nut
G09914507Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check fuel system for tightness.

Check function of DME.

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