Engine Oil Pressure: Testing and Inspection

Checking oil pressure
Tools and materials
Special 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 from hot oil!
--> Engine oil and components of the oil circuit can become very hot!
--> 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.

Note:
^ 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.

Note: The oil pressure switch is located on the oil-filter console to the right (in the direction of travel) under the generator.

Overview:

1. Remove front engine guard.

Connector On Oil Pressure Sensor:

2. Pull off connector on oil pressure sensor. To do this, press on the button.

Unscrewing Oil Pressure Switch:

Note: When the oil pressure switch is unscrewed, approximately 0.3 litres of engine oil escapes.

3. Loosen the oil pressure switch and unscrew it. Collect the emerging oil and dispose of it in accordance with the applicable national laws.
4. Screw in test adapter 4 with sealing ring in the oil-filter console and tighten by hand.

Connecting Pressure Gauge:

5. Connect pressure gauge on the hose and tighten it hand-tight.

Note:
^ 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.





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

Note: When the pressure gauge is unscrewed, approximately 0.3 l of engine oil escapes.

7. Remove pressure gauge with test hose. Collect the emerging engine oil and dispose of it in accordance with the applicable national laws.

Installing The Oil Pressure Switch:

8. Install oil temperature switch with new sealing ring. Tightening torque 15 ft. lbs..

Pushing On Electric Connector:

9. Push electric connector onto oil pressure switch. The connector must engage audibly.
10. Install front engine guard.
11. Check oil level and correct if necessary.