1. Attach the tachometer.
2. Remove the oil pressure sensor and install special tools.
3. Start the engine. Shut it off immediately if the pressure gauge registers no oil pressure. Correct the problem before continuing.
4. Allow the engine to reach operating temperature (turns on at least twice). The pressure should be:
Oil pressure:
- idling: minimum 70 kPa (0.7 kgf/cm2)
- at 3000 rpm: minimum 340 kPa (3.5 kgf/cm2)
If the oil pressure is within specifications, reinstall the oil pressure switch and check again.
If the oil pressure is not within specifications, check the oil pump.