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Home >> Nissan-Datsun >> 2021 >> Sentra SV >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2 Of 2) >> Components/Circuit Diagnosis >> Fuel Tank Vacuum Relief Valve >> Component Inspection
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Component Inspection

  1. CHECK FUEL FILLER CAP 
    1. Turn ignition switch OFF.
    2. Remove fuel filler cap.
    3. Wipe clean valve housing.
      G04073650Courtesy of NISSAN NORTH AMERICA, INC.
    4. Install fuel filler cap adapter (commercial service tool) to fuel filler cap.
      G04073651Courtesy of NISSAN NORTH AMERICA, INC.
    5. Check valve opening pressure and vacuum.

      Pressure:

      15.3 - 20.0 kPa (0.156 - 0.204 kg/cm 2 , 2.22 - 2.90 psi)

      Vacuum:

      -6.0 to -3.4 kPa (-0.061 to -0.035 kg/cm 2 , -0.87 to -0.49 psi)

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    GO TO 2.

  2. REPLACE FUEL FILLER CAP 

    Replace fuel filler cap.

    CAUTION: Use only a genuine fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may illuminate.

    INSPECTION END