Infiniti G35 (V35). Manual - part 290

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

EC-41

C

D

E

F

G

H

I

J

K

L

M

A

EC

SYMPTOM: CANNOT REFUEL/FUEL ODOR FROM THE FUEL FILLER OPENING IS STRONG 
WHILE REFUELING.

1. 

CHECK EVAP CANISTER

1.

Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.

2.

Weigh the EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 2.2 kg (4.9 lb).

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 3.

2. 

CHECK IF EVAP CANISTER SATURATED WITH WATER

Does water drain from the EVAP canister?

Yes or No

Yes

>> GO TO 3.

No

>> GO TO 5.

3. 

REPLACE EVAP CANISTER

Replace EVAP canister with a new one.

>> GO TO 4.

4. 

DETECT MALFUNCTIONING PART

Check the EVAP hose between EVAP canister and vehicle frame for clogging or poor connection.

>> Repair or replace EVAP hose.

5. 

CHECK VENT HOSES AND VENT TUBES

Check hoses and tubes between EVAP canister and refueling EVAP vapor cut valve for clogging, kink, loose-
ness and improper connection.

OK or NG

OK

>> GO TO 6.

NG

>> Repair or replace hoses and tubes.

6. 

CHECK FILLER NECK TUBE

Check recirculation line for clogging, dents and cracks. 

OK or NG

OK

>> GO TO 7.

NG

>> Replace filler neck tube.

PBIB1031E

EC-42

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

7. 

CHECK REFUELING EVAP VAPOR CUT VALVE

Refer to 

EC-42, "Component Inspection"

 .

OK or NG

OK

>> GO TO 8.

NG

>> Replace refueling EVAP vapor cut valve with fuel tank.

8. 

CHECK FUEL FILLER TUBE

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

OK or NG

OK

>> GO TO 9.

NG

>> Replace fuel filler tube.

9. 

CHECK ONE-WAY FUEL VALVE-I

Check one-way valve for clogging.

OK or NG

OK

>> GO TO 10.

NG

>> Repair or replace one-way fuel valve with fuel tank.

10. 

CHECK ONE-WAY FUEL VALVE-II

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.
Do not drop any material into the tank.

OK or NG

OK

>> INSPECTION END

NG

>> Replace fuel filler tube or replace one-way fuel valve

with fuel tank.

Component Inspection

NBS000MS

REFUELING EVAP VAPOR CUT VALVE

 With CONSULT-II

1.

Remove fuel tank. Refer to 

FL-11, "FUEL TANK"

 .

2.

Drain fuel from the tank as follows:

a.

Remove fuel feed hose located on the fuel gauge retainer.

b.

Connect a spare fuel hose, one side to fuel gauge retainer where the hose was removed and the other
side to a fuel container.

c.

Drain fuel using “FUEL PUMP RELAY” in “ACTIVE TEST” mode with CONSULT-II.

3.

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.

4.

Check refueling EVAP vapor cut valve for being stuck to open as follows.

a.

Connect vacuum pump to hose end.

b.

Remove fuel gauge retainer with fuel gauge unit.
Always replace O-ring with new one.

c.

Put fuel tank upside down.

SEF665U

ON BOARD REFUELING VAPOR RECOVERY (ORVR)

EC-43

C

D

E

F

G

H

I

J

K

L

M

A

EC

d.

Apply vacuum pressure to hose end [

−

13.3 kPa (

−

100 mmHg, 

−

3.94 inHg)] with fuel gauge retainer

remaining open and check that the pressure is applicable.

 Without CONSULT-II

1.

Remove fuel tank. Refer to 

FL-11, "FUEL TANK"

 .

2.

Drain fuel from the tank as follows:

a.

Remove fuel gauge retainer.

b.

Drain fuel from the tank using a handy pump into a fuel container.

3.

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.

4.

Check refueling EVAP vapor cut valve for being stuck to open as follows.

a.

Connect vacuum pump to hose end.

b.

Remove fuel gauge retainer with fuel gauge unit.
Always replace O-ring with new one.

c.

Put fuel tank upside down.

d.

Apply vacuum pressure to hose end [

−

13.3 kPa (

−

100 mmHg, 

−

3.94 inHg)] with fuel gauge retainer

remaining open and check that the pressure is applicable.

PBIB1035E

PBIB1035E

EC-44

POSITIVE CRANKCASE VENTILATION

POSITIVE CRANKCASE VENTILATION

PFP:11810

Description

NBS000MT

SYSTEM DESCRIPTION

This system returns blow-by gas to the intake manifold.
The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake
manifold. During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the
PCV valve. Normally, the capacity of the valve is sufficient to handle any blow-by and a small amount of venti-
lating air. The ventilating air is then drawn from the air inlet tubes into the crankcase. In this process the air
passes through the hose connecting air inlet tubes to rocker cover. Under full-throttle condition, the manifold
vacuum is insufficient to draw the blow-by flow through the valve. The flow goes through the hose connection
in the reverse direction.
On vehicles with an excessively high blow-by, the valve does not
meet the requirement. This is because some of the flow will go
through the hose connection to the air inlet tubes under all condi-
tions.

Component Inspection

NBS000MU

PCV (POSITIVE CRANKCASE VENTILATION) VALVE

With engine running at idle, remove PCV valve from rocker cover. A
properly working valve makes a hissing noise as air passes through
it. A strong vacuum should be felt immediately when a finger is
placed over valve inlet.

SEC921C

PBIB1588E

PBIB1589E