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.