Install the right high-pressure rail

• Loosen screw (1).
• Slacken hold-down device (2).

  Courtesy of BMW OF NORTH AMERICA, INC.

  NOTE: TECHNICAL INFORMATION 
  Always install the high pressure line or rail free of distortion. To ensure distortion-free installation of the high pressure line and to avoid damaging the thread, it must be possible for both nuts to be screwed on to the injectors easily hand force.
• First insert the high-pressure rail at the high-pressure pump, then lower to the point where the ball heads are positioned inside the injector connections and the high-pressure rail is correctly positioned.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Then tighten the nuts (1) on the injectors so they are hand-tight.
• Next, hand-tighten the nut (2) of the high pressure pump.
• Lastly, mount screws (3) and hand-tighten.
• Tighten down screws (3).
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Rail on cylinder head cover
  M6x25	Tightening torque	10 Nm

• Tighten the screws (1) the hold-down device.
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Hold-down device to cylinder head
  M7	Tightening torque	13 Nm

• Tighten the nuts (2) on the injectors.
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Rail to injector
  M12	Joining torque	10 Nm
  	Tightening torque	23 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Tighten nut (3) on the high pressure pump.

Follow-up work 

• Refer to INSTALLING THE SOUND INSULATION ON THE RIGHT-HAND CYLINDER HEAD COVER .
• Refer to SECURING THE WIRING HARNESS ON THE CYLINDER HEAD COVER ON THE RIGHT .
• Refer to INSTALLING THE HOLDER FOR THE DIGITAL MOTOR ELECTRONICS CONTROL UNIT ON THE RIGHT .
• Refer to INSTALLING THE INTEGRATED POWER SUPPLY MODULE (PDM) .
• Refer to INSTALLING THE DME CONTROL UNIT FOR CYLINDERS 1 TO 4 .
• Check the coolant level in the low-temperature coolant circuit and top up, if needed. Refer to DRAINING AND TOPPING UP COOLANT FOR LOW TEMPERATURE CIRCUIT .
• Refer to INSTALLING REAR UNDERBODY PROTECTION .
• Refer to INSTALLING RIGHT CLEAN AIR PIPE .
• Refer to CONNECTING THE RIGHT CHARGE AIR LINE TO THE TURBOCHARGER .
• Refer to INSTALLING THE RIGHT UNFILTERED-AIR DUCT .
• Refer to INSTALLING ALL IGNITION COILS ON THE RIGHT .
• Refer to INSTALLING INTAKE FILTER HOUSING .
• Refer to INSTALLING ACOUSTIC COVER .
• Refer to INSTALLING THE REAR TOP CROSS CONNECTION .
• Refer to INSTALLING FRONT CROSS CONNECTION (FRONT-END STRUT REMOVED) .
• Refer to INSTALLING BOTH FRONT-END STRUTS .
• Refer to INSTALLING THE COVER OF THE ENGINE COMPARTMENT CENTER .
• Refer to CONNECTING ALL BATTERY GROUND LEADS .