Checking Engine Oil Pressure

CHECKING ENGINE OIL PRESSURE

NOTE:
Due to restricted access to the oil pressure switch, it is recommended to first check VVT oil pressure at the oil temperature sensor Checking VVT Oil Pressure .





1. Remove the oil pressure switch (1) Oil Pressure Switch - Removal.





CAUTION:
Threads in block are 1/8"-28 British Standard Pipe (BSP). Do not install a National Pipe Thread (NPT) threaded adapter, this could crack the cylinder block.

2. Install an 1/8-28 BSP male to 1/8-27 female threaded adapter (2).

3. Install an oil pressure gauge (1).

4. Start engine and record oil pressure.

CAUTION:
If oil pressure is 0 at idle, do not perform the 3000 RPM test

5. If oil pressure is 0 at idle, shut off engine. No oil pressure or low oil pressure at the oil pressure switch can be due to the following:

- Pressure relief valve stuck open.

- Clogged oil pump pick-up screen.

6. Remove the oil pan and inspect for debris Engine Oil Pan - Removal.

7. Remove the oil pressure relief valve Oil Pressure Relief Valve - Removal.

8. Inspect the oil pressure relief valve Procedures.

9. If pressure relief valve is OK, replace the balance shaft module assembly Engine Oil Pump - Removal.





10. After test is complete, remove test gauge (1) and fitting (2).





CAUTION:
The oil pressure switch has tapered threads, over tightening could crack the engine block.

NOTE:
If the oil pressure switch is removed, it must be replaced with a new switch.

11. Install the oil pressure switch and electrical connector Oil Pressure Switch - Installation.