13 53 332 Removing and installing/replacing feed line (N54, N54T)

WARNING: This page is about a different car, the 2016 BMW Z4, 2015 BMW Z4, and 2014 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

WARNING:

Observe warning on cylinder head cover.

Disconnect NEGATIVE BATTERY TERMINAL (risk of fire due to short-circuiting on dismantling).

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 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 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 contamination 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:

Remove INTAKE PLENUM .

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 and detach fuel line (1).

Catch and dispose of escaping fuel.

Fig 1: Identifying Fuel Line, Nut And Screw

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Seal fuel lines with special tools (1) 13 5 161 and (2) 13 5 162 .

Fig 2: Identifying Special Tools (13 5 161) And (13 5 162)

Courtesy of BMW OF NORTH AMERICA, INC.

Slacken nut (2).

Release screw (3).

Remove feed line.

Close off feed line and high pressure pump with a matching plug from set of special tools 32 1 270 .

Fig 3: Identifying Fuel Line, Nut And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Follow sequence of screw connections:

Tighten down nut (2) with special tool 13 5 020 .
Tightening torque 13 53 6AZ .
Replace aluminum screw (3). Tighten screw (3).
Tightening torque 13 53 9AZ .
Connect fuel line (3).

Fig 4: Identifying Fuel Line, Nut And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work:

Check fuel system for tightness.

Check function of DME.