Checking Engine Oil Pressure

→ Let hot components cool down.

→ Wear personal protective gear.

Information 

Specifications for wrench sizes (a/f specifications) for screw heads are described as follows:

• Torx screws: (E..) for external Torx, (T..) for internal Torx. 
• Hexagon-head bolts (internal and external hexagon): Wrench size (a/f) 

Installation position of threaded plug -1- on turbo engine: 

Fig 1: Identifying Threaded Plug On Turbo Engine Installation Position

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1. Unscrew aluminum threaded plug (M14 x 1.5, hexagon socket a/f 5) on cylinder head 4-6.
2. Fit adapter No. 19 (a/f 19) -1-  with the old sealing ring for the threaded plug to the test connection for cylinder head 4-6.
   1. 2.1. Attach connection line -2-  of the test pressure gauge to the adapter.
      Fig 2: Attaching Connection Line To Adapter

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
3. PIWIS Tester II 9818  must be connected to the vehicle. Select Oil temperature in the actual values.

   Information 

   • An engine oil temperature of at least 90° Celsius is required in order to check the oil pressure correctly. 
   • The following tools are approved for checking engine oil pressure. 
   • Oil Pressure Tester VAG 1342 WE 1068 
   • Oil Pressure Tester OP 85 WE 1276  , Leitenberger (recommended) 
4. Start the engine and let it heat up until the engine oil temperature is at least 90° Celsius.
   1. 4.1. Read off the oil temperature on the PIWIS Tester.
5. Rev to the prescribed test speed and read off the oil pressure on the pressure gauge -3-  .

   Engine speed [RPM]	Oil pressure p min [bar]	Oil temperature t min. in °C
   Idle speed	1.5 ± 0.2	90
   3, 000	2.4 ± 0.2	90

   Fig 3: Identifying Oil-Pressure Gauge

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
6. Remove test tools.
   1. 6.1. Wrap a clean cloth around the test connection on the cylinder head to absorb drops of oil. 
7. Fit threaded plug (M14 x 1.5) with a new sealing ring.

   → Tightening torque: 25 Nm (19 ft. lb.)