Installing Fuel Collection Pipe

→ Check that the purge connection of the fuel distribution pipe is seated securely.

→ Tighten the purge connection of the fuel distribution pipe to the correct tightening torque.

Information 

The tightening specifications for the basic engine are stored centrally (→ 1001IN TIGHTENING TORQUES, TIGHTENING SEQUENCES, ASSEMBLY OVERVIEWS ).

Tightening torques and assembly instructions for other assemblies (e.g. chassis, electrics, transmission or body) or for peripheral engine equipment can be found in the corresponding documents.

Information 

Please observe the following for the V6 => 

• The repair concepts for the V6 are the same as for the V8. 
• The special features and component deviations are listed and shown in →  1001IN TIGHTENING TORQUES, TIGHTENING SEQUENCES AND ASSEMBLY OVERVIEWS  . 
• More significant deviations are shown in separate descriptions. 
• If no special features are specifically highlighted, the assembly and adjustment instructions for the V8 apply. 
  Fig 1: Identifying Fuel Distributor Pipe (V8)

  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. -1-  - Fuel distributor pipe (fuel gallery, rail)
  2. -2-  - Plug for purge connection
  3. -3-  - High-pressure sensor
     Fig 2: Identifying Fuel Distributor Pipe (V6)

     Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Fuel distributor pipe (fuel gallery)
  2. Plug; 3 turns (tighten, loosen, tighten)
  3. High-pressure sensor

1. Using the leak test equipment, blow the fuel out of the high-pressure pump and the high-pressure line into a cloth.

   Shake the fuel distributor pipe over a cloth to remove fuel residues. → WM 243001 CHECKING FUEL COLLECTION PIPE FOR LEAKS  .

2. Fit fuel rail to the engine by twisting it -arrow-  .
   Fig 3: Removing Fuel Rail

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Information 

   When fitting the union nuts, make sure that the connection taper of the high-pressure line is loose in the injector. It should be possible to screw on the union nut easily without greasing it and without the use of force (check that it is straight and screws on easily). Loosen the injector retainers and correct the positions of the various components if necessary.

3. Fit fuel rail.
   Fig 4: Identifying High Pressure Fuel Distribution

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
   1. 3.1. Carefully lift up the coolant vent line at the rear if necessary and slide the fuel rail into installation position.
   2. 3.2. Screw fuel rail on loosely. Screw union nuts loosely onto the injectors.

      Information 

      When fitting the union nuts, make sure that the connection taper of the high-pressure line is loose in the injector. It should be possible to screw on the union nut easily without greasing it and without the use of force (check that it is straight and screws on easily). Loosen the injector retainers and correct the positions of the various components if necessary.

      Only fit screws and union nuts -1- loosely until everything fits! 

   3. 3.3. Also fit the high-pressure line -3-  between the rail and high-pressure pump.
4. Fit screws on fuel distributor pipe (fuel rail) -1 and 2-  .

   The screw on the thermostat housing is longer.

   The rear right screw can only be reached using a long, thin Torx wrench.

   Fig 5: Identifying Fuel Distributor Pipe Mounting Bolts

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
   1. Screw, M6 x 16
   2. Screw, M6 x 25
   3. Connection for high-pressure line
   4. Connection to injector (high-pressure fuel injector)
5. When all threaded joint positions fit correctly and without tension, tighten all threaded joints according to the prescribed tightening torques.

   The union nuts for the injectors and the high-pressure feed line must first be tightened initially, then loosened and then tightened finally.

   Use an open socket socket-wrench insert Nr.18-1  → see Fig 6 or similar tool to screw on the injectors.

   Fasten the high-pressure line with an open-ended socket ring wrench Nr.185  and a torque wrench.

   Always comply with the specified tightening torques

   → 1001IN TIGHTENING TORQUES, TIGHTENING SEQUENCES AND ASSEMBLY OVERVIEWS

   Fig 6: Identifying Socket

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
6. Check the high-pressure system for leaks. → WM 243001 CHECKING FUEL COLLECTION PIPE FOR LEAKS  .
7. Connect cable plug for the high-pressure sensor -2-  .
   Fig 7: Identifying High Pressure Fuel Distribution

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.