Lincoln Corsair Manuals

Lincoln Corsair: Engine System - General Information / General Procedures - Oil Pressure Test

Oil Pressure Test 2.7L EcoBoost & 3.3L Duratec & 5.0L Ti-VCT

  1. NOTE: It is necessary to disconnect the battery to avoid setting any DTCs that could cause the PCM to command the oil pressure to other than what should be observed from a correctly operating system during the oil pressure test.

    Disconnect the battery ground cable.
    For additional information, refer to: Battery Disconnect and Connect (414-01 Battery, Mounting and Cables, General Procedures).
  1. Remove the EOP sensor. Refer to the appropriate 303-14 Electronic Engine Controls section.
  1. NOTE: The VDOP (variable displacement oil pump) solenoid and the EOP sensor must be connected and functional during the oil pressure test.

    Assemble the oil pressure adaptors as needed to the oil gallery port. Install the commercially available oil pressure gauge.
    • 1. M12x1.5 Male to 1/8 NPT Female adaptor
    • 2. 1/8 NPT Male to two 1/8 NPT Female T-fitting
    • 3. Commercially available oil pressure gauge
    • 4. 1/8 NPT Male to M12x1.5 Female adaptor
    • 5. Oil pressure sensor
  1. Connect the EOP sensor electrical connector.
  1. Connect the battery ground cable.
    For additional information, refer to: Battery Disconnect and Connect (414-01 Battery, Mounting and Cables, General Procedures).

Oil Pressure Test 3.5L EcoBoost & 3.5L PowerBoost

  1. With the vehicle in NEUTRAL, position it on a hoist.
    For additional information, refer to: Jacking and Lifting - Overview (100-02 Jacking and Lifting, Description and Operation).
  1. Remove and discard the oil filter.
  1. Connect a GearWrench 3289 Oil Pressure Tester Kit or equivalent oil pressure gauge to the oil filter housing.

All vehicles

  1. Run the engine until normal operating temperature is reached.
  1. Run the engine at the specified rpm and record the gauge reading.
  1. The oil pressure should be within specifications. Refer to the 303-01 specifications procedure for each engine for the acceptable oil pressure range and specific vehicle requirements.
  1. If the pressure is not within specification, check the following possible sources:

      Visual Inspection Chart


    Mechanical
    • Insufficient oil
    • Oil leakage
    • Worn or damaged oil pump
    • Oil pump screen cover and tube
    • Excessive main bearing clearance
    • Excessive connecting rod bearing clearance
    • Chain tensioner leak

Oil Pressure Test 3.5L EcoBoost & 3.5L PowerBoost

  1. Remove the commercially available oil pressure gauge.
  1. Install a new manufacturer-specified oil filter.
  1. Check and refill the oil as needed, using new manufacturer-specified oil. Refer to the Specifications in the appropriate 303-01 section.

Oil Pressure Test 2.7L EcoBoost & 3.3L Duratec & 5.0L Ti-VCT

  1. Disconnect the battery ground cable.
    For additional information, refer to: Battery Disconnect and Connect (414-01 Battery, Mounting and Cables, General Procedures).
  1. Disconnect the EOP sensor electrical connector.
  1. Remove the commercially available oil pressure gauge. Remove the oil pressure adaptors.
  1. Install the EOP sensor. Refer to the appropriate 303-14 Electronic Engine Controls section.
  1. Connect the battery ground cable.
    For additional information, refer to: Battery Disconnect and Connect (414-01 Battery, Mounting and Cables, General Procedures).

    General Procedures - Oil Leak Inspection

    NOTE: If an overnight drive is done, the fan air or road air blast can cause erroneous readings. NOTE: When diagnosing engine oil leaks, the source and location of the leak must be positively identified prior to repair...

    General Procedures - Piston Diameter

    Check NOTE: Refer to the appropriate Section 303-01 for the specification. Measure the piston diameter 90 degrees from the piston pin and 41 mm (1...

    Other information:

    Lincoln Corsair 2020-2022 Owners Manual: Essential Towing Checks


    Follow these guidelines for safe towing: Do not tow a trailer until you drive your vehicle at least 1,000 mi (1,600 km). Consult your local motor vehicle laws for towing a trailer. See the instructions included with towing accessories for the proper installation and adjustment specifications...

    Lincoln Corsair 2020-2022 Owners Manual: Jump Starting the Vehicle


    WARNING: Batteries normally produce explosive gases which can cause personal injury. Therefore, do not allow flames, sparks or lighted substances to come near the battery. When working near the battery, always shield your face and protect your eyes...

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