Symptom: Cannot Refuel/Fuel Odor From The Fuel Filler Opening Is Strong While Refueling.

1. Remove EVAP canister with EVAP canister vent control valve attached.
2. Weigh the EVAP canister with EVAP canister vent control valve attached.

   The weight should be less than 1.8 kg (4.0 lbs).

OK or NG 

1. OK: GO TO 2.
2. NG: GO TO  3 .

Does water drain from the EVAP canister? See Figure .

Yes or No 

1. Yes: GO TO 3.
2. No: GO TO  6 .

Replace EVAP canister with a new one.

1. : GO TO 4.

1. Check visually for insect nests in the water separator air inlet.
2. Check visually for cracks or flaws in the appearance.
3. Check visually for cracks or flaws in the hose.
4. Check that A  and C  are not clogged by blowing air into B  with A  , and then C  plugged. See Figure .
5. In case of NG in items 2 - 4, replace the parts.
   NOTE:

   • Do not disassemble water separator.

OK or NG 

1. OK: GO TO 5.
2. NG: Replace water separator.

Check the EVAP hose between EVAP canister and water separator for clogging or poor connection.

1. : Repair or replace EVAP hose.

Check hoses and tubes between EVAP canister and refueling control valve for clogging, kink, looseness and improper connection.

OK or NG 

1. OK: GO TO 7.
2. NG: Repair or replace hoses and tubes.

Check signal line and recirculation line for clogging, dents and cracks.

OK or NG 

1. OK: GO TO 8.
2. NG: Replace filler neck tube.

1. Remove fuel filler cap.
2. Check air continuity between hose ends A and B.

   Blow air into the hose end B. Air should flow freely into the fuel tank.

3. Blow air into hose end A and check there is no leakage.
4. Apply pressure to both hose ends A and B [20 kPa (150 mmHg, 5.91 inHg)] using a pressure pump and a suitable 3-way connector. Check that there is no leakage. See Figure .

OK or NG 

1. OK (With CONSULT-II): GO TO 9.
2. OK (Without CONSULT-II): GO TO  10 .
3. NG: Replace refueling control valve with fuel tank.

With CONSULT-II 

1. Remove fuel tank. Refer to FUEL SYSTEM .
2. Drain fuel from the tank as follows:
   1. Remove fuel feed hose located on the fuel gauge retainer.
   2. Connect a spare fuel hose, one side to fuel gauge retainer where the hose was removed and the other side to a fuel container.
   3. Drain fuel using FUEL PUMP RELAY in ACTIVE TEST mode with CONSULT-II.
3. Check refueling EVAP vapor cut valve for begin stuck to close as follows.

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

4. Check EVAP vapor cut valve for being stuck to open as follows.
   1. Connect vacuum pump to hose ends A and B using a suitable 3-way connector.
   2. Remove fuel begin retainer with fuel gauge unit.

      Always replace O-ring with new one. 

   3. Put fuel tank upside down.
   4. Apply vacuum pressure to both hose ends A and B [-13.3 kPa (-100 mmHg, -3.94 inHg)] with fuel gauge retainer remaining open and check that the pressure is applicable. See Figure .

OK or NG 

1. OK: GO TO  11 .
2. NG: Replace refueling EVAP vapor cut valve with fuel tank.

Without CONSULT-II 

1. Remove fuel tank. Refer to FUEL SYSTEM .
2. Drain fuel from the tank as follows:
   1. Remove fuel gauge retainer.
   2. Drain fuel from the tank using a hand pump into a fuel container.
3. Check refueling EVAP vapor cut valve for begin stuck to close as follows.

   Blow air into the refueling EVAP vapor cut valve (from hose and B), and check that the air flows freely into the tank.

4. Check EVAP vapor cut valve for being stuck to open as follows.
   1. Connect vacuum pump to hose ends A and B using a suitable 3-way connector.
   2. Remove fuel gauge retainer with fuel gauge unit.

      Always replace O-ring with new one. 

   3. Put fuel tank upside down.
   4. Apply vacuum pressure to both hose ends A and B [-13.3 kPa (-100 mmHg, -3.94 inHg)] with fuel gauge retainer remaining open and check that the pressure is applicable. See Figure .

OK or NG 

1. OK: GO TO 11.
2. NG: Replace refueling EVAP vapor cut valve with fuel tank.

Check filler neck tube and hose connected to the fuel tank for clogging, dents and cracks.

OK or NG 

1. OK: GO TO 12.
2. NG: Replace fuel filler tube.

Check one-way valve for clogging.

OK or NG 

1. OK: GO TO 13.
2. NG: Repair or replace one-way fuel valve with fuel tank.

1. Make sure that fuel is drained from the tank.
2. Remove fuel filler tube and hose.
3. Check one-way fuel valve for operation as follows.

   When a stick is inserted, the valve should open, when removing stick it should close.

   Fig 1: Checking One-Way Fuel Valve

   Courtesy of NISSAN MOTOR CO., U.S.A.

Do not drop any material into the tank. 

OK or NG 

1. OK: INSPECTION END 
2. NG: Replace fuel filler tube or replace one-way fuel valve with fuel tank.