Oil Pressure Test

WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Inspect the engine for installation of an aftermarket oil filter. Review oil and filter maintenance history to make sure that the vehicle has not gone beyond the standard Ford recommended oil change intervals. Check the engine oil level and check the oil for contamination. If the oil is contaminated, engine damage can occur, the source of the contamination must be identified and repaired as necessary.

Run the engine until normal operating temperature is reached.
Remove the oil pressure switch. REFER to: Oil Pressure Switch .
Connect an commercially available Oil Pressure Gauge to the oil pressure switch port.
Record the oil pressure gauge reading at 700 RPM, 1, 200 RPM and 1800 RPM.
Compare the oil pressure recordings to the specifications, REFER to: Specifications .
NOTE: The oil pump and the oil pressure regulator are mounted internally to the engine front cover and are serviced only with the engine front cover. There are no parts available for service.

If the pressure is not within specification, check the following possible sources:
- Insufficient oil
- Oil leakage
- Worn or damaged oil pump
- Oil pump screen and pickup tube
- Excessive main bearing clearance
- Excessive connecting rod bearing clearance
- Damaged or missing piston cooling tube
If the concern is not evident, verify the symptom. GO to Symptom Chart - Engine Performance .
Remove the commercially available Oil Pressure Gauge from the oil pressure switch port.
Install the oil pressure switch. REFER to: Oil Pressure Switch .