Oil Pressure Test

If the low oil pressure indicator stays on with the engine running, check the engine oil level (see ENGINE OIL LEVEL CHECK  ). If the oil level is correct:

1. Remove the oil pressure switch (see OIL PRESSURE SWITCH REPLACEMENT  ), then install the oil pressure gauge (A).
   Fig 1: Identifying 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 (80°C) 

   Engine Oil Pressure: 

   At Idle: 69 kPa (0.70 kgf/cm ²  , 10.0 psi) min. 

   At 3, 000 rpm: 343 kPa (3.50 kgf/cm ²  , 49.7 psi) min. 

4. If the oil pressure is not within specifications, inspect these items:
   • Blocking of oil filter.
   • Blocking of oil screen.
   • Inspect the oil pressure relief valve (see OIL PUMP OVERHAUL  ).
   • Inspect the oil pump (see OIL PUMP OVERHAUL  ).
5. Remove the oil pressure gauge and the oil pressure gauge attachment, then install the engine oil pressure switch (see OIL PRESSURE SWITCH REPLACEMENT  ).