Engine Oil Pressure Check

1. Remove oil pressure sending unit and install an oil pressure test gauge assembly.
2. Run engine until thermostat opens.

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

3. Oil Pressure: Curb Idle 25 kPa (4 psi) minimum 3000 RPM 170/724 kPa (25/105 psi).
4. If oil pressure is 0 at idle. Shut off engine, check for pressure relief valve stuck open or a clogged oil pickup screen.