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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> Engine Mechanical >> Engine Lubrication System - 2.5 L >> Engine Oil >> Inspection >> Oil Pressure Check

Oil Pressure Check

WARNING:
  • Be careful not to burn yourself, as the engine oil may be hot.
  • For M/T models, put the gearshift lever in the Neutral "N" position. For A/T models, put the selector lever in the Park "P" position.
  1. Check the oil level.
  2. Remove the under cover, using power tools.
  3. Remove the oil pressure switch to connect the oil pressure gauge.
  4. After warming up the engine, check that oil pressure corresponding to the engine speed is produced.
    Fig 1: Identifying Oil Pressure Gauge
    G02883934Courtesy of NISSAN MOTOR CO., U.S.A.

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

    ENGINE OIL PRESSURE SPECIFICATION

    Engine speed (rpm) Idle speed 2,000 6,000
    Engine pressure kPa (kg/cm2 , psi) Approx. 98 (1.0, 14) or more Approx. 294 (3.0, 43) or more Approx. 392 (4.0, 57) or more
  5. After checking, install the oil pressure switch as follows.
    1. Remove old sealant adhering to the switch and engine.
    2. Apply High Performance Thread Sealant.

      Use Genuine High Performance Thread Sealant or equivalent. Refer to "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS "

      Oil pressure switch : 12.3 - 17.2 N.m (1.25 - 1.75 kg.m, 10 - 12 ft-lb) 

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