Engine Oil Pressure: Testing and Inspection

Checking oil pressure








Special tools

Test

Caution: Danger of scalding!
^ Engine oil and components of the oil circuit can become very hot!
^ Avoid contact with skin and eyes!
^ Wear suitable protective clothing!
^ The relevant instructions must be observed.

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 bracket to the left under the generator.





1. Remove front engine guard.





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

Caution: Danger of scalding!
^ Engine oil and components of the oil circuit can become very hot!
^ Avoid contact with skin and eyes!
^ Wear suitable protective clothing!

Note: When the oil pressure switch is unscrewed, approximately 0.3 L 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 the test hose into the oil filter bracket and tighten it hand tight.





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.
^ Test 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.

Caution: Danger of scalding!
^ Engine oil and components of the oil circuit can become very hot!
^ Avoid contact with skin and eyes!
^ Wear suitable protective clothing!

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.





8. Install oil temperature switch with new sealing ring.
Tightening torque: 20 Nm (15 ft. lbs.).





9. Push electric plug onto oil pressure switch. The plug must engage audibly.





10. Install front engine guard.
11. Check oil level and correct if necessary.





Tightening torques