Engine Oil Pressure: Testing and Inspection

WM 170301 Checking oil pressure on V6 DFI engines

Tools and materials

Tools





Oil-pressure gauge






Checking oil pressure

WARNING

Engine oil is toxic.

- Danger of poisoning.

-> Do not consume food or drink while working (danger of mixing).
-> If swallowed, observe the warning information on the containers, contact a doctor if necessary and show the information on the containers.

WARNING

Danger of scalding with hot engine oil.

-> Allow engine and components to cool down.
-> Avoid contact with the skin and eyes.
-> Wear suitable protective clothing.

WARNING

Oil is combustible.

- Risk of fire due to oil and hot components (exhaust manifold, etc.)

-> Do not pour engine oil over very hot components (e.g. turbocharger).
-> Never place cloths soaked with oil on hot engine components.
-> In case of fire, use CO2 or dry powder fire extinguishers.

Information

- The oil pressure may be too low for a number of reasons:

- Oil is diluted.

- Oil pump is faulty.

- Bearing clearance is too large (e.g. crankshaft bearing).

- Oil level is too low.

- Oil pressure regulating valve is faulty.

- Incorrect oil has been used. Use only oil that has been approved by Porsche for the measurement.

Information

- The oil pressure switch is located in the oil filter housing/engine support arm.

Information

- When the oil pressure switch is unscrewed, approx. 0.3 litres of engine oil escapes.

1. Remove oil pressure switch/sensor.-> 170419 Removing and installing oil pressure switch on V6 DFI engines Service and Repair





Oil pressure sensor

2. Use adapter insert 4 and tighten by hand with a suitable sealing ring instead of the oil pressure sensor/switch.
3. Connect pressure gauge to hose.





Pressure gauge

Information

- The oil temperature must range between 80°C and 100°C when performing the measurement.

- Check the oil temperature using a special thermometer or the PST II tester.

4. Start the engine and move off at the required test speed. Read off the oil pressure on the pressure gauge while doing so.






Information

- When the pressure gauge is unscrewed, approx. 0.3 l of engine oil escapes.

5. Remove pressure gauge with test hose. Collect emerging engine oil and dispose of it in accordance with the applicable national laws.
6. Install oil pressure switch with new sealing ring. -> 170419 Removing and installing oil pressure switch on V6 DFI engines Service and Repair





Oil pressure switch