13 53 332 Removing and installing/replacing feed line (N63)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

WARNING: Disconnect NEGATIVE BATTERY TERMINAL (risk of fire due to short circuit 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 safety goggles.

Wear protective gloves.

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 left intake filter housing

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 clamps (1) and (2).

Replace clamps (2).

Detach both charge-air ducts (3) and remove.

Check the gaskets on the exhaust turbocharger. replacing if necessary.

Fig 1: Identifying Both Charge-Air Ducts And Clamps

Courtesy of BMW OF NORTH AMERICA, INC.

Picture shows the left side, the procedure for the right side is identical.

Detach hoses (1) from clean air pipe.

Release screw (2).

Tightening torque: 13 71 1AZ .

Detach clean-air pipe (3) in direction of travel from exhaust turbocharger.

Check the gasket on the clean air pipe. replacing if necessary.

Fig 2: Identifying Clean-Air Pipe And Screw

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Unlock and disconnect fuel delivery line (1).

Seal fuel lines with special tools 13 5 160 and 13 5 162 .

Unlock and disconnect plug (2) on fuel low-pressure sensor.

Release fuel feed line (3) on high-pressure pump.

Tightening torque: 13 53 4AZ .

Release screws (4).

Tightening torque: 13 53 6AZ .

Catch and dispose of escaping fuel.

Fig 3: Identifying Fuel Feed Line On High-Pressure Pump And Screws

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Seal fuel lines with special tools (1) 13 5 160 and (2) 13 5 162 .

Fig 4: Identifying Seal Fuel Lines With Special Tools (13 5 160 And 13 5 162)

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Release fuel feed line (1) on high-pressure pump.

Tightening torque: 13 53 4AZ .

Catch and dispose of escaping fuel.

Fig 5: Identifying Fuel Feed Line On High-Pressure Pump

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Release screws (1) on retaining clips.

Tightening torque: 13 53 7AZ .

Feed out and remove fuel feed line (2).

Fig 6: Identifying Fuel Feed Line And Nuts

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Installation note:

Observe tightening sequence.

1. Fit fuel feed line.
In so doing, tighten screw connections hand-tight only.
2. Tighten down fuel feed line (1) on high-pressure pumps to torque (2) and with crowfoot wrench (3).
Tightening torque: 13 53 4AZ .
3. Tighten down lugs on fuel low-pressure sensor.
Tightening torque: 13 53 6AZ .
4. Tighten down retaining clips.
Tightening torque: 13 53 7AZ .

Fig 7: Tightening Down Fuel Feed Line On High-Pressure Pumps
Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check fuel system for tightness.

Check function of DME.