Checking VVT Oil Pressure

This test can be used to help diagnose VVT faults.

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1. Disconnect and remove oil pressure sensor (1).

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   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 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. Check for pressure relief valve stuck open or a clogged oil pick-up screen.
6. Remove oil pan and inspect for debris. Refer to REMOVAL  .
7. Remove oil pressure relief valve and inspect, if damaged replace pressure relief valve. Refer to VALVE, OIL PRESSURE RELIEF, REMOVAL .
8. If pressure relief valve is ok, replace balance shaft module assembly. Refer to REMOVAL  .

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

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10. Install oil pressure sensor and electrical connector.