Sentra L4-1.8L (QG18DE) SULEV (2003)
Refueling Vapor Cut Valve: Testing and Inspection
Component Inspection
REFUELING EVAP VAPOR CUT VALVE
With CONSULT-II
1. Remove fuel tank. Refer to "Removal and Installation".
2. Drain fuel from the tank as follows:
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Remove fuel feed hose located on the fuel level sensor unit retainer.
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Connect a spare fuel hose, one side to fuel level sensor unit retainer where the hose was removed and the other side to a fuel container.
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Drain fuel using "FUEL PUMP RELAY" in "ACTIVE TEST" mode with CONSULT-II.
3. Check refueling EVAP vapor cut valve for being stuck closed 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 open as follows.
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Connect vacuum pump to hose ends A and B using a suitable 3-way connector.
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Remove fuel level sensor unit retainer with fuel level sensor unit.
Always replace O-ring with new one.
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Put fuel tank upside down.
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Apply vacuum pressure to both hose ends A and B [-13.3 kPa (-100 mm Hg, -3.94 in Hg)] with fuel level sensor unit retainer remaining open
and check that the pressure is applicable.
Without CONSULT-II
1. Remove fuel tank. Refer to "Removal and Installation".
2. Drain fuel from the tank as follows:
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Remove fuel level sensor unit retainer.
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Drain fuel from the tank using a handy pump into a fuel container.
3. Check refueling EVAP vapor cut valve for being stuck closed 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 open as follows.
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Connect vacuum pump to hose ends A and B using a suitable 3-way connector.
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Remove fuel level sensor unit retainer with fuel level sensor unit.
Always replace O-ring with new one.
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Put fuel tank upside down.