Special Tools Required

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00 1 440
13 0 140
13 0 160
13 0 161
13 0 162
32 1 270

See MAINTENANCE AND GENERAL INFORMATION - SPECIAL TOOLS .

See FUEL SYSTEM - SPECIAL TOOLS .

See STEERING AND WHEEL ALIGNMENT - SPECIAL TOOLS .

WARNING: Electric fuel pump starts up automatically when door is opened! Observe warning on cylinder head cover. Disconnect battery negative terminal (risk of fire due to short-circuiting on removal). See 61 20 900 DISCONNECTING AND CONNECTING BATTERY NEGATIVE LEAD .

WARNING: 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 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 32 1 270 .
High-pressure lines may be rescrewed a maximum of 10 times.

Recycling:

Fuel escapes when fuel lines are detached.

Catch and dispose of escaping fuel in a suitable container.

Observe country-specific waste-disposal regulations.

Necessary preliminary tasks:

Partially remove wiring harness for engine.
Partially remove wiring harness for injectors.
Detach battery positive lead from battery positive support point.
Remove coolant expansion tank . See 17 11 100 REMOVING AND INSTALLING/REPLACING COOLANT EXPANSION TANK (N63) .
Remove water valve for heater/air conditioner. See 64 11 273 REPLACING WATER VALVE FOR HEATER .
Detach tank vent line from tank venting valve and point of separation.
Remove lower section of steering spindle . See 32 31 070 REMOVING AND INSTALLING/REPLACING STEERING SPINDLE LOWER SECTION (N63) .
Clamp off and fuel feed line and remove plug.
Remove ignition coils . See 12 13 511 REPLACING IGNITION COILS (N63) .

NOTE:

Ignition coils must not be fouled by fuel!
The resistance of the silicone material is reduced significantly by contact with fuel, which may cause the ignition coil to fail! Cloths/rags must therefore be used to prevent fuel from getting into the spark plug slots!
Before installing ignition coils, clean spark plug slots with compressed air.
Make sure the spark plug slot is absolutely clean.

Disconnect pressure line from injector to rail

NOTE: The following description applies to all pressure lines.

Secure injector against twisting with wrench (2).

Release union nut (1).

IMPORTANT: If several pressure lines are removed, ensure that each pressure line is reinstalled in its original location (cylinder). Mark pressure lines.

Fig 1: Releasing Union Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Release union nuts (1).

Disconnect pressure line (2).

Set down pressure lines in order.

Fig 2: Disconnecting Pressure Line

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Only if injector has to be turned into installation position:

Release bolt a few turns until holding-down element (3) is slackened.
Turn injector (1) in direction of arrow until nuts (2) on pressure line can be easily screwed on by hand.
To do so, engage wrench on hexagon head of injector if necessary.
Tighten union nuts on pressure line hand-tight.

Fig 3: Identifying Holding-Down Element

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

Do not under any circumstances pull injector out of bore!

If the injector is pulled out of the bore hole, the PTFE sealing ring must be replaced! Replacing PTFE sealing ring, refer to 13 53 310 .

Adhere to tightening sequence:

First tighten down union nut on injector.
Then tighten down union nut on rail.

Tighten down special tool 13 0 160 for pressure lines.

Tighten down pressure line on injector with torque wrench (2) and special tool (1) 13 0 161 . In so doing, grip hexagon head of injector with wrench (3).

Tighten down nuts with special tool (1) 13 0 161 .

Tightening torque, see 13 53 2AZ in 13 53 FUEL INJECTION NOZZLES AND PIPES .

Fig 4: Tightening Down Pressure Line On Injector

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten down pressure line on rail with torque wrench (1) and special tools (2) 00 1 440 (3) 13 0 162 and (4) 13 0 161 .

Tightening torque, see 13 53 2AZ in 13 53 FUEL INJECTION NOZZLES AND PIPES .

Fig 5: Tightening Down Pressure Line On Injector

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

When tightening down pressure line on rail, make sure that angle of rotation of special tool 13 0 161 is limited. Re-engage special tool if necessary.

Distortion of torque possible!

Disconnect pressure line from high-pressure pump to rail .

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

Release union nuts (1).

Disconnect pressure line (2).

Fig 6: Identifying Union Nuts & Pressure Line

Courtesy of BMW OF NORTH AMERICA, INC.

Connect pressure line from high-pressure pump to rail .

Tighten down pressure line (1) hand-tight on rail and injector.

First tighten down pressure line (1) on high-pressure pump to torque (2) and with crowfoot wrench (3).

Tightening torque, see 13 53 3AZ in 13 53 FUEL INJECTION NOZZLES AND PIPES .

Fig 7: Tightening Down Pressure Line On Rail

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

When tightening down pressure line on rail, make sure that angle of rotation of special tool 13 0 140 is limited. Re-engage special tool if necessary.

Fig 8: Tightening Down Pressure Line On Rail

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 9: Tightening Down Pressure Line Using Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.