Engine Oil Pressure: Testing and Inspection

DIAGNOSIS AND TESTING - CHECKING ENGINE OIL PRESSURE
1. Remove the oil pressure switch.
2. Install oil pressure test gauge assembly, Special Tools C-3292 with 8406 adapter.
3. Start engine and monitor gauge readings.

CAUTION: If oil pressure is 0 at idle, Do Not Run engine at 3000 RPM

4. Oil Pressure (engine at operating temperature): Curb Idle 34.5 kPa (5 psi) minimum 3000 RPM 300-724 kPa (45-105 psi).
5. If oil pressure is 0 at idle. Shut off engine, check for pressure relief valve stuck open or a clogged oil pickup screen.
6. Install oil pressure switch after testing is completed.