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Home >> Infiniti >> 2011 >> M56 Base >> Repair and Diagnosis >> Engine Mechanical >> Engine Lubrication System >> Periodic Maintenance >> Engine Oil >> Inspection >> Oil Pressure Check

Oil Pressure Check

WARNING:
  • Be careful not to get burned, as engine oil may be hot.
  • Oil pressure check should be done in "Parking position".
  1. Check the engine oil level.
  2. Remove engine undercover with power tool.
  3. Disconnect harness connector at oil pressure switch (1), and remove oil pressure switch.
    Fig 1: Identifying Oil Pressure Switch
    G07021600Courtesy of NISSAN MOTOR CO., U.S.A.
    CAUTION: Never drop or impact oil pressure switch.
  4. Install the oil pressure gauge [SST: ST25051001 (J25695-1)] (A) and hose [SST: ST25052000 (J25695-2)] (B).
    Fig 2: Identifying Oil Pressure Gauge And Hose
    G05224147Courtesy 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 :  Refer to "ENGINE OIL PRESSURE ".

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

  7. After the inspections, install oil pressure switch as per the following:
    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 an equivalent.  Refer to "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS ".

      Tightening torque 

      2WD models :  Refer to "2WD : EXPLODED VIEW ".

      AWD models :  Refer to "AWD : EXPLODED VIEW ".

    3. After warming up engine, check there is no leakage of engine oil with running engine.
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