13 51 065 Removing and installing/replacing left high pressure pump (N63)

WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Observe warning on cylinder head cover.
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.

IMPORTANT: 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 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 silencer housing.
Remove fan cowl. See REMOVING AND INSTALLING/REPLACING FAN COWL WITH ELECTRIC FAN .

Recycling

Fuel escapes when fuel lines are detached.

Catch and dispose of escaping fuel.

Observe country-specific waste disposal regulations.

Release clamp (1).

Disconnect the boost air ducts (2) to the turbocharger.

Fig 1: Identifying Boost Air Ducts And Clamp

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Pull off the hose (1) from the fresh air duct (3).

Release screw (2).

Tightening torque 13 71 1AZ .

Detach the fresh air duct in direction of travel from turbocharger. Check the seal on the fresh air duct, replace if necessary.

Fig 2: Identifying Clean-Air Pipe, Hoses And Screw

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Unlock plug catch (1) on ignition coil (2) and unplug connector.

Slowly pull out the ignition coil (2) in an upwards direction with no jerky actions.

NOTE: There is a possibility that the silicone tube will tear and therefore be destroyed. This procedure is applicable to all ignition coils.

Fig 3: Pulling Out Ignition Coil

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Installation note:

Position the ignition coil (1) and gently push it to the limit position, if necessary by twisting it back and forth slightly. Then check anti-twist lock.

The rubber cap must completely surround the sealing collar of the cylinder head cover.

NOTE: If rubber parts are squashed, the ignition coil can slip out again during engine operation.

Fig 4: Installing Rubber Seal Of Ignition Coil

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Installation note:

Push connector (1) with connector catch (2) open onto ignition coil. Carefully close connector catch (2) in direction of arrow.

The connector catch must snap into place without great effort.

The connector must be positioned on the counter piece with hardly any gaps when the locking lever is being closed. In the process, the cheeks of the lever are positioned inside the counter piece.

Fig 5: Pushing Plug With Plug Catch Onto Ignition Coil

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NOTE: The locking lever can become deformed if it is not installed correctly. This means that there is no longer a safety lock on the plug connection. As a result, the connector can slip out during engine operation (loose contact, misfiring).

Release screws (1) and (2).

Fig 6: Identifying Plug Connection Screws

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Release pressure line at the injectors (1).

Fig 7: Identifying Injectors

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Installation note:

TIGHTEN pressure line on injector with torque wrench (2) and special tool (1) 13 0 161).

In so doing, grip hexagon head of injector with spanner (3).

Tightening torque: 13 53 3AZ

Fig 8: Tightening High-Pressure Fuel Line On Injector Using Torque Wrench And Special Tool (13 0 161)

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Release the union nuts of the fuel flow line (1) and pressure line (2) on the high pressure pump (3).

Fig 9: Identifying Fuel Flow Line And Pressure Line On High Pressure Pump

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Installation note:

Hand tighten the fuel flow line (1) and pressure line (2) on the high pressure pump.

Next, tighten the pressure line on the high pressure pump with the torque wrench (2) and a special tool (3) 00 1 440.

Tightening torque: 13 53 3AZ

Fig 10: Tightening High-Pressure Line On High-Pressure Pump Using Torque Wrench And Special Tool (00 1 440)

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Disconnect fuel delivery line. Tighten the fuel lines with special tool (1) 13 5 160 and special tool (2) 13 5 162 .

Catch and dispose of escaping fuel.

Fig 11: Sealing Fuel Lines With Special Tools (13 5 160 And 13 5 162)

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Pull off connector (2) with holder (1) in an upwards direction.

Fig 12: Identifying High Pressure Pump Connector And Holder

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Detach the connector (1) from the high pressure fuel pump (2).

Fig 13: Identifying High Pressure Fuel Pump And Connector

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IMPORTANT: High-pressure pump can be pretensioned by camshaft cams!
Slightly slacken screws (1) of high pressure pump (2). If the high pressure pump is forced out, the engine will have to be turned to bring the camshafts to a different position.
Otherwise it will not be possible to install the high pressure fuel pump! Release screws (1).

Fig 14: Identifying High Pressure Pump With Mounting Screws

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Replace screws. The screws are coated with a securing compound.

The pump plunger can fall out when the high pressure fuel pump (2) is pulled out! Detach the high pressure fuel pump (2) and remove.

Engine oil can emerge when pulling off the pump; have cloths ready.

Installation note:

Provisionally fasten screws (1) and tighten uniformly in 90° increments until final torque. Tightening torque: 13 51 1AZ .

Place depth gauge (1) flat on fuel pump flange (see arrow) (shown on N43 engine).

Fig 15: Placing Depth Gauge Flat On Fuel Pump Flange

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Turn engine at central bolt in direction of engine rotation until the depth gauge shows that the camshaft has reached the BDC position.

Fig 16: Locating Engine Rotation Position At Central Bolt

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Installation note:

Replace sealing ring (1).

Clean contact surfaces.

Fig 17: Identifying High Pressure Pump Sealing Ring

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Assemble engine.

Check fuel system for leak tightness.

Check function of DME.