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 debrisEngine Oil Pan - Removal.
7. Remove the oil pressure relief valveOil Pressure Relief Valve - Removal.
8. Inspect the oil pressure relief valveProcedures.
9. If pressure relief valve is OK, replace the balance shaft module assemblyEngine 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.