6.4L 392 HEMI V-8 – LUBRICATION – DIAGNOSIS AND TESTING – CHECKING ENGINE OIL PRESSURE

1. Remove oil pressure sending unit and install gauge assembly (special tool #C-3292A, Gauge,
Pressure).

2. Run engine until thermostat opens.

3. Check oil pressure gauge:
– Curb Idle – 25 kPa (4 psi) minimum
– 3000 RPM – 170 – 758 kPa (25 – 110 psi)

4. If oil pressure is 0 at idle, shut off engine. Check for a clogged oil pick-up screen or a pressure relief valve stuck open.