2008 Infiniti G35 BaseFACTORY OEM SERVICE PROCEDURE

Component Inspection

  1. CHECK FUEL TANK VACUUM RELIEF VALVE
    1. Turn ignition switch OFF.
    2. Remove fuel filler cap.
    3. Wipe clean valve housing.
      Fig 1: Cut Sectional View Of Fuel Filler Cap
      G04874784Courtesy of NISSAN MOTOR CO., U.S.A.
    4. 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 --3.3 kPa (--0.061 to --0.034 kg/cm 2  , --0.87 to --0.48 psi) 

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: GO TO 2.

    Fig 2: Checking Valve Opening Pressure And Vacuum
    G04874785Courtesy of NISSAN MOTOR CO., U.S.A.
  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 come on.

    INSPECTION END

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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