Removing Fuel Collection Pipe

NOTIFICATION 

Dirt on injection system components 

• Material damage 
• Rough-running engine 
• Bad exhaust emissions 
  • Thoroughly clean connection points and adjacent areas before loosening them. If the engine is very dirty, wash it before starting disassembly work.
  • Lay removed parts on a clean surface and cover them. Do not use fibre-shedding cloths.
  • Carefully cover components or seal them if repair work will not be carried out immediately. Place rubber caps on connections. Seal intake openings with film or adhesive tape.
  • Only install clean parts. Do not take spare parts out of the packaging until just before installation. Never use compressed air when the system is open. Do not move the vehicle.

Information 

Please note 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.

Information 

• Do not bend high-pressure lines. Always remove the high-pressure distributor pipe and other fuel-supply components in the high-pressure area completely. Check that the connection points are not damaged and are perfectly clean and make sure there is no thread damage. Fit union nuts on all connection points by hand before screwing in screws or bolts. Remove dirt on the conical/ball joints. Check connection points for leaks following fitting. 

Information 

• The ignition must be switched off when working on the fuel system. 
• Absorb any escaping fuel using a suitable binding material or a cloth. 
• Cloths which have absorbed fuel must be disposed of according to the applicable national laws. 
• The fuel system must be depressurized before starting work on it. 
• Only work on the fuel system in well-ventilated rooms. 
• Any seals which have been removed must always be replaced. 

Fuel distributor pipe, V8

1	Fuel distributor pipe (fuel gallery, rail)
2	Plug for purge connection
3	High-pressure sensor

Fuel distributor pipe, V6

1	Fuel distributor pipe (fuel gallery)
2	Plug; 3 turns (tighten, loosen, tighten)
3	High-pressure sensor

1. Pull off cable plug for the high-pressure sensor -2-  .

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   High pressure fuel distribution

2. Place a cloth around the high-pressure connection on the high-pressure line -3-  .

   Relieve the fuel pressure by slowly opening the high-pressure line with an open-ended wrench.

3. Loosen all eight union nuts for the high-pressure fuel injectors -1-  .

   Use an open socket > Nr.18-1 - socket-wrench insert  or similar tool to do this > Socket. 

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Socket

4. Remove screws on fuel distributor pipe (fuel rail) -1 and 2-  and lift off fuel rail.

   The screw on the thermostat housing is longer.

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

   Fig 3: Fuel Distributor Pipe Mounting Components Location

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Mounting for fuel distributor pipe

   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. Remove fuel rail from the engine by twisting it -arrow-  .

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Fuel rail in engine