13 51 017 Removing and installing or replacing high-pressure fuel pump (N54, N53)

WARNING: This page is about a different car, the 2010 BMW X6, 2009 BMW X6, and 2008 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 8 610
13 5 020
13 5 281
13 5 282
32 1 270

WARNING: Observe warning on cylinder head cover.
Disconnect BATTERY NEGATIVE TERMINAL (risk of fire due to short-circuiting on removal).
Electric fuel pump starts up automatically each time door is opened!
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 velocity 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 before removing pipes or individual components.
Use only fluff-free cloths.
Seal all fuel system openings with protective caps or plugs.

Necessary preliminary tasks:

Remove throttle valve assembly (N54, N54T)

Recycling:

Fuel escapes when fuel lines are detached.

Catch and dispose of escaping fuel.

Observe country-specific waste-disposal regulations.

Apply silicone-free multifunction spray (part number 83 23 0 418 567) on to supports (1) of base well bracket (2).

Unplug connector (3) and (4) from base well.

Slide base well (2) in direction of arrow.

Fig 1: Applying Silicone-Free Multifunction Spray On Base Well Bracket Supports

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Fig 2: Inserting Special Tools (00 7 300) In Base Well Mounting Points

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Insert special tool 00 7 300 in mounting points (1) on base well.

NOTE: Place tips of special tool 00 7 300 between retainers (2) and then center (arrow).

Detach base well (1) from bracket (2) with special tool 00 7 300 .

Fig 3: Removing Base Well From Bracket Using Special Tool (00 7 300)

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Unlock connector (1) and remove.

Unlock and detach fuel line (2).

Catch and dispose of escaping fuel.

Fig 4: Identifying Connector And Fuel Line

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

Fig 5: Identifying Seal Fuel Lines With Special Tools (13 5 281) And (13 5 282)

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Slacken nut (1).

Release screw (2).

Installation note:

Replace aluminum screw (2).

Remove feed line (3).

Fig 6: Identifying Fuel Line Connection

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Seal feed line with matching plug from set of special tools 32-1270 PLUG .

Fig 7: Identifying Seal Feed Line With Matching Plug From Special Tool Kit (32 1 270)

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Slacken nut (1).

Fig 8: Identifying Slacken Nut

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Undo screws (1) and raise acoustic cover (2) in front area.

Fig 9: Raising Acoustic Cover In Front Area

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Slacken nut (1).

Fig 10: Identifying Slacken Nut

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Seal fuel line connections of high pressure pump (1) with matching plugs from set of special tools 32-1270 PLUG .

Fig 11: Identifying Seal Fuel Line Connections Of High-Pressure Pump With Matching Plugs From Special Tool Kit (32 1 270)

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Release bolts with special tool 11 8 610 .

Detach high pressure pump (1) and remove.

Engine oil can escape when pump is detached; have a cleaning cloth ready.

Fig 12: Removing High-Pressure Pump Using Special Tool (11 8 610)

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Installing high pressure pump

Installation of high pressure pump is described separately from removal.

Replace sealing ring (1).

Clean contact surfaces.

Fig 13: Identifying Sealing Ring

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When installing, turn high pressure pump (1) if necessary in direction of arrow until bore holes for screws are flush.

Fig 14: Identifying High-Pressure Pump

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IMPORTANT: Only hand-tighten screws (1) of high pressure pump (2) with special tool 11 8 610 .

This helps ensure that no strain is produced when the high pressure line is tightened.

Fig 15: Identifying High Pressure Pump With Screws

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Copper seals that may be fitted on the high pressure line are no longer needed and must be removed.

If reusing pressure line, lightly grease threads of pressure connections.

Threads of new pressure lines are already coated.

Only hand-tighten nut (1).

Fig 16: Identifying Hand-Tightened Nut

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Only hand-tighten nut (1).

Fig 17: Identifying Hand-Tightened Nut

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NOTE: Feed lines with a soldered bracket must be replaced by the new version with elastomer clamp holder. Observe installation position of fuel low-pressure sensor. Lines for solenoid switches are laid behind fuel line.

Fig 18: Identifying Fuel Line Connection

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Install feed line (3).

Only hand-tighten nut (1).

Tighten screw (2). Replace aluminum screw.

Tightening torque 13 53 9AZ.

Tighten down screws with special tool 11 8 610 .

Tightening torque 13 51 1AZ.

Fig 19: Installing High-Pressure Pump Using Special Tool (11 8 610)

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Tighten nut (1).

Tightening torque 13 53 7AZ.

Fig 20: Identifying Nut

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

Tightening torque 13 53 7AZ.

Fig 21: Identifying Nut And Special Tool (13 5 020)

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

Tightening torque 13 53 6AZ.

Fig 22: Tightening Down Nut Using Special Tool (13 5 020)

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Install and lock connector (1).

Fig 23: Identifying Connector

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Slide base well (2) on to bracket (1) as far as it will go.

Install and lock connector (3) and (4).

Fig 24: Identifying Bracket, Connector And Slide Base Well

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Assemble engine.

Check fuel system for leak tightness.

Check function of DME.