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Home >> Infiniti >> 2005 >> FX35 AWD >> Repair and Diagnosis >> Engine Mechanical >> Engine Lubrication System >> Engine Oil >> Inspection >> Oil Pressure Check

Oil Pressure Check

WARNING:
  • Be careful not to get burn yourself, as engine oil may be hot.
  • Oil pressure check should be done in "Parking position".
  1. Check the engine oil level. Refer to "ENGINE OIL LEVEL "
  2. Remove front engine undercover with power tool.
  3. Disconnect harness connector at oil pressure sensor, and remove oil pressure sensor using deep socket (commercial service tool).
    CAUTION: Do not drop or shock oil pressure switch.
    Fig 1: Identifying Oil Pressure Switch (2WD)
    G02358572Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 2: Identifying Oil Pressure Switch (AWD)
    G02358573Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Install the oil pressure gauge [SST] and hose [SST].
    Fig 3: Identifying Oil Pressure Gauge
    G02358574Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Start the engine and warm it up to normal operating temperature.
  6. Check the engine oil pressure with engine running under no-load.
    NOTE: When the engine oil temperature is low, the engine oil pressure becomes high.

    Engine oil pressure [Engine oil temperature at 80°C (176 °F)] 

    OIL PRESSURE SPECIFICATION

    Engine speed (RPM) Approximate discharge pressure [kPa (kg/cm2 , psi)]
    Idle speed More than 98 (1.0, 14)
    2,000 More than 294(3.0, 43)

    If difference is extreme, check engine oil passage and oil pump for engine oil leaks. 

  7. After the inspections, install oil pressure switch as follows:
    1. Remove old liquid gasket adhering to oil pressure switch and the mating surface.
    2. Apply liquid gasket and tighten oil pressure switch to the specification.

      Use Genuine RTV Silicone Sealant or equivalent. Refer to " RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS  ". 

      1. Oil pressure switch: 
        1. : 14.8 N.m (1.5 kg-m, 11 ft-lb) 
    3. After warming up engine, make sure there is no leakage of engine oil with running engine.
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