Only if injector has to be rotated in fitted position

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Release bolt a few turns until holding-down element (3) is slackened.
Turn injector (1) in direction of arrow until union 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 1: Turning Injector
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 53 315 .

Adhere to tightening sequence:

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

Tighten high-pressure fuel lines with special tool 13 0 160 .

Tighten high-pressure fuel 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 union nuts with special tool (1) 13 0 161.

Tightening torque 13 53 2AZ .

Fig 2: Tightening High-Pressure Fuel Line On Injector Using Torque Wrench And Special Tool (13 0 161)

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On cylinders 4 and 8 tighten down pressure line (1) to torque (2) and with crowfoot wrench (3). In so doing, grip hexagon head of injector with wrench.

Tightening torque 13 53 2AZ .

Fig 3: Tightening Down Pressure Line Using Crowfoot Wrench

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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 13 53 2AZ .

Installation:

When tightening high-pressure line on rail, note that angle of rotation of special tool 13 0 161 is limited. Re-position special tool if necessary.

Distortion of torque possible!

Fig 4: Tightening Pressure Line On Rail Using Torque Wrench And Special Tools (001440, 13 0 162 and 13 0 161)

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Remove high-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 5: Identifying High Pressure Line With Union Nuts

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Refit high-pressure line from high-pressure pump to rail.

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

First tighten high-pressure line (1) on high-pressure pump using torque wrench (2) and special tool (3) 00 1 440 .

Tightening torque 13 53 3AZ .

Fig 6: Tightening High-Pressure Line On High-Pressure Pump Using Torque Wrench And Special Tool (00 1 440)

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

When tightening high-pressure line on rail, note that angle of rotation of special tool 13 0 140 is limited. Re-position special tool if necessary.

Fig 7: Identifying Angle Of Rotation For Special Tool (13 0 140)

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Tighten high-pressure line (1) on rail using torque wrench (2), long crowfoot spanner (3) and special tool (4) 13 0 140 .

Tightening torque 13 53 3AZ .

Fig 8: Tightening High-Pressure Line On Rail Using Torque Wrench, Long Crowfoot Spanner And Special Tool (13 0 140)

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Vent fuel system with BMW diagnosis system.

Check fuel system for leaks.

Check function of DME.