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Home › Infiniti › 2008 › G35 Base › Repair and Diagnosis › Engine Mechanical › Engine Lubrication System › On-Vehicle Maintenance › 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 "Neutral position" (M/T models) or "Parking position" (A/T models).
  1. Check the engine oil level. Refer to , "INSPECTION ".
  2. Remove engine undercover with power tool.
  3. Disconnect harness connector at oil pressure switch, and remove oil pressure switch using deep socket (commercial service tool).
    CAUTION: Do not drop or shock oil pressure switch.
    Fig 1: Identifying Oil Pressure Switch (2WD)
    G05224145Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 2: Identifying Oil Pressure Switch (AWD)
    G05224146Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Install the oil pressure gauge [SST: ST25051001 (J25695-1)] (A) and hose [SST: ST25052000 (J25695-2)] (B).
    Fig 3: 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 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 ".

      Tightening torque : Refer to  , "AWD : EXPLODED VIEW ".

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