Removing Cylinder Head Cover (Valve Cover)

WARNING: This page is about a different car, the 2010 Porsche Cayenne, 2009 Porsche Cayenne, and 2008 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Valve cover fitted and screwed on incorrectly

Incorrect installation position of hall sender with respect to the camshaft
Risk of engine damage
Fault entries in the DME control unit

→ Align the valve cover carefully over the fitted ignition rod modules.

Pull off the cap and the cable plug for the hydraulic valve lying beneath it by pressing on the wire clip -a- .

Fig 1: Removing Hydraulic Valve Lying Beneath Cap And Cable Plug
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Loosen the two ground points on the valve covers. -1-

Fig 2: Identifying Engine Wire Harness, Timing Case And Valve Cover Screws
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
1. Screw, M6 x 12
2. Screw, M6 x 16
Disconnect cable plug for hall sender.
Information
- Plastic clips can be damaged once the wiring harness holder has been undone and must be checked to ensure they can be used again!
Remove wire harness holders by pulling carefully on the holders. The wire harness can be detached and lifted up carefully at the lugs. Lay wire harness aside.

Fig 3: Removing Wire Harness Holder
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Information
- It is best to use a tool with a head height of less than 50 mm -A- (see SPECIAL TOOLS ) for loosening and tightening the rear fastening screw on the cylinder head cover close to the plenum panel .
  
  Fig 4: Identifying Tool Height
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
- If you do not have a suitable tool, the side plenum panel must be removed and then refitted. To do this, remove cover of plenum panel. → WM 664419 REMOVING AND INSTALLING COWL PANEL COVER . Remove plenum panel wall (shown on left). Release lambda sensor connector from the holder at the plenum panel wall -1- . Unclip cable -2- . Loosen PDCC reservoir from plenum panel, if fitted. Loosen three screws on the plenum panel -3- . Pull plenum panel up and off. Install in reverse order. When doing this, first fit seal on the body and spray with silicon spray .
  
  Fig 5: Identifying Plenum Panel Wall
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Unscrew screws and carefully lift valve cover. Figure shows tightening sequence.

Fig 6: Identifying Valve Cover Screws Tightening Sequence (Cylinders 1 To 4)
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Fig 7: Identifying Valve Cover Screws Tightening Sequence (Cylinders 5 To 8)
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Fig 8: Identifying Generator Engine Wire Harness
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
1. Holder => see Valve cover
1. G - Cable clips
Turn the valve cover over and remove inner and outer seals. Clean sealing faces on valve cover and cylinder head.

Fig 9: Identifying Sealing Faces On Cylinder Head
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Information
- Always replace seals.