Oil Pressure Test

If the pressure warning light stays on with the engine running, check the engine oil level. If the oil level is correct.

1. Remove the engine oil pressure switch, and install an oil pressure gauge (A).
   Fig 1: Removing Engine Oil Pressure Switch & Installing An Oil Pressure Gauge

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
2. Start the engine. Shut it off immediately if the gauge registers no oil pressure. Repair the problem before continuing.
3. Allow the engine to reach operating temperature) fan comes on at least twice). The pressure should be:

   Engine Oil Temperature:  176°F (180°C)

   Engine Oil Pressure: 

   At Idle:  70 kPa (0.7 kgf/cm² , 10 psi) minimum

   At 3,000 RPM:  300 kPa (.01 kgf/cm² , 44 psi) minimum

4. If the oil pressure is NOT within specification inspect these items:
   • Check the oil screen for clogging.
   • Check the oil pump (see Oil Pump Overhaul  ).