LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2012 >> G25 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Component Testing >> On Board Refueling Vapor Recovery (ORVR) >> Component Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Component Inspection

  1. INSPECTION START

    Will CONSULT be used?

    Will CONSULT be used? 

    YES: GO TO 2.

    NO: GO TO  3.

  2. CHECK REFUELING EVAP VAPOR CUT VALVE

    With CONSULT 

    1. Turn ignition switch OFF.
    2. Remove fuel tank. Refer to "REMOVAL AND INSTALLATION ".
    3. Drain fuel from the tank as follows:
      • Remove fuel feed hose located on the fuel gauge retainer. Refer to "EXPLODED VIEW ".
      • Connect a spare fuel hose, one side to fuel gauge retainer where the hose was removed and the other side to a fuel container.
      • Drain fuel using "FUEL PUMP RELAY" in "ACTIVE TEST" mode with CONSULT.
    4. Check refueling EVAP vapor cut valve for being stuck to close as follows.

      Blow air into the refueling EVAP vapor cut valve (from the end of EVAP/ORVR line hose), and check that the air flows freely into the tank.

    5. Check refueling EVAP vapor cut valve for being stuck to open as follows.
      • Connect vacuum pump to hose end.
      • Remove fuel gauge retainer with fuel gauge unit. Refer to "EXPLODED VIEW ".

      Always replace O-ring with new one. 

      • Put fuel tank upside down.
      • Apply vacuum pressure to hose end [-13.3 kPa (-0.136 kg/cm2 , -1.93 psi)] with fuel gauge retainer remaining open and check that the pressure is applicable.
        Fig 1: Applying Vacuum Pressure To Fuel Tank And EVAP/ORVR Line Hose End
        G08451665Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: Replace refueling EVAP vapor cut valve with fuel tank. Refer to "EXPLODED VIEW ".

  3. CHECK REFUELING EVAP VAPOR CUT VALVE

    Without CONSULT 

    1. Turn ignition switch OFF.
    2. Remove fuel tank. Refer to "REMOVAL AND INSTALLATION ".
    3. Drain fuel from the tank as follows:
      • Remove fuel gauge retainer. Refer to "EXPLODED VIEW ".
      • Drain fuel from the tank using a handy pump into a fuel container.
    4. Check refueling EVAP vapor cut valve for being stuck to close as follows.

      Blow air into the refueling EVAP vapor cut valve (from the end of EVAP/ORVR line hose), and check that the air flows freely into the tank.

    5. Check refueling EVAP vapor cut valve for being stuck to open as follows.
      • Connect vacuum pump to hose end.
      • Remove fuel gauge retainer with fuel gauge unit. Refer to "EXPLODED VIEW ".

      Always replace O-ring with new one. 

      • Put fuel tank upside down.
      • Apply vacuum pressure to hose end [-13.3 kPa (-0.136 kg/cm2 , -1.93 psi)] with fuel gauge retainer remaining open and check that the pressure is applicable.
        Fig 2: Applying Vacuum Pressure To Fuel Tank And EVAP/ORVR Line Hose End
        G08451666Courtesy of NISSAN NORTH AMERICA, INC.

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: Replace refueling EVAP vapor cut valve with fuel tank. Refer to "EXPLODED VIEW ".