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Home >> Infiniti >> 2004 >> FX35 AWD >> Repair and Diagnosis >> Engine Mechanical >> Engine Lubrication System >> Engine Oil >> Inspection >> Oil Pressure Check
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Oil Pressure Check

WARNING:
  • Be careful not to burn yourself, as engine oil may be hot.
  • Put selector lever in the Park "P" position.
  1. Check engine oil level. Refer to "ENGINE OIL LEVEL  ".
  2. Remove front engine undercover with power tool.
  3. Disconnect oil pressure switch harness connector.
  4. Remove oil pressure switch.
    Fig 1: Locating Oil Pressure Switch (2WD)
    G02398446Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 2: Locating Oil Pressure Switch (AWD)
    G02398447Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Install oil pressure gauge (SST) and hose (SST).
    Fig 3: Identifying Special Service Tools
    G02398448Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Start engine and warm it up to normal operating temperature.
    7. NOTE: When engine oil temperature is low, engine oil pressure becomes high.
  7. Check engine oil pressure with engine running under no-load.

    Engine oil pressure W/Engine oil temperature at 80 °C (176 °F)  .

    ENGINE OIL PRESSURE SPECIFICATIONS

    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. 

  8. 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 specification.

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

      1. Oil pressure switch 
      2. Torque: 14.8 N.m (1.5 kg-m, 11 ft-lb) 
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