Nissan Qashqai J11. Manual - part 568

FUEL SYSTEM

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PERIODIC MAINTENANCE

FUEL SYSTEM

Inspection

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Inspect fuel lines, fuel filler cap and fuel tank for improper attach-
ment, leaks, cracks, damage, loose connections, chafing or deterio-
ration.
If necessary, repair or replace damaged parts.

Quick Connector

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CAUTION:

• After connecting fuel tube quick connectors, make sure quick connectors are secure.
• Ensure that connector and resin tube do not contact any adjacent parts.

A

: Engine

B

: Fuel line

C

: Fuel tank

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< REMOVAL AND INSTALLATION >

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FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

REMOVAL AND INSTALLATION

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

Exploded View

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REMOVAL

CAUTION:

Never remove or disassemble parts unless instructed as shown in the figure.

DISASSEMBLY

Lock ring

Sub fuel level sensor assembly

O-ring

Fuel tank

Fuel level sensor unit, fuel filter and fuel pump 
assembly

: Vehicle front

Tightening must be done following the Installation procedure. Refer to 

FL-19, "Removal and Installation"

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: Always replace after every disassembly.

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FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

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Removal and Installation

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REMOVAL

Fuel Level Sensor Unit

WARNING:

Be sure to read “General Precautions” before working on the fuel system. Refer to 

FL-43, "General

Precautions"

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1.

Release the fuel pressure from the fuel lines. Refer to 

ECK-153, "Work Procedure"

.

2.

Check fuel level on a level ground. If the fuel level is at 1/2 or higher, drain enough fuel so that the level on
the fuel gauge is at half or below.
• This is to prevent overflow of fuel from the tank when the  fuel level sensor unit, fuel filter and fuel pump

assembly is removed 

• In the event of malfunction in fuel pump, insert a hose measuring less than 20mm (0.79 in) in diameter

into fuel filler tube through fuel filler opening to draw fuel from filler tube.

- Disconnect fuel filler hose from fuel filler tube. Refer to 

FL-10, "Exploded View"

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- Insert hose into fuel tank through fuel filler hose to draw fuel from fuel tank.

3.

Disconnect batterie cable from negative terminal.

4.

Open fuel filler lid and filler cap to release the pressure inside fuel tank.

5.

Remove rear seat. Refer to 

SE-35, "Removal and Installation"

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6.

Remove inspection hole cover.
• Using a screwdriver, remove it by turning clips clockwise by 90 degrees.

7.

Disconnect harness connector (3) and quick connectors (4).

Fuel filter and fuel pump assembly

Fuel level sensor unit

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Guideline

: Draw approximately 32 liters (7 Imp gal) from a full-tank con-
dition.

1

: Fuel feed tube 

2

: Fuel level sensor unit, fuel filter and fuel pump assembly

: Vehicule front 

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< REMOVAL AND INSTALLATION >

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FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

• Remove quick connector in the following procedures.
- NOTE:

• The figure show the process of quick connector disconnection. Parts arround quick connector could

have a different shape compare to the figure.

- Hold the sides of quick connector, press tabs and pull out fuel

feed tube.

- If quick connector sticks to tube of main fuel level sensor unit,

push and pull quick connectors several times until they start to
move. Then disconnect them by pulling.

CAUTION:

• Quick connector can be disconnected when the tabs are

depressed completely. Never twist it more than neces-
sary.

• Never use any tools to disconnected quick connector.
• Keep resin tube away from heat. Be especially careful

when welding near the resin tube.

• Prevent acid liquid such as battery electrolyte, etc. from

getting on resin tube.

• Never bend or twist resin tube during installation and dis-

connection.

• Never insert plug, preventing damage to O–ring in quick

connector.

• To keep the connecting portion clean and to avoid dam-

age and foreign materials, cover them completely with
plastic bags or something similar.

8.

Using lock ring wrench [SST: KV99104700], remove lock ring.
NOTE:
For reference when installing, put a matching mark on lock ring,
fuel level sensor unit and fuel tank. 

A

: Push in tabs

B

:  Pull

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A

: Connection (cross-section)

B

: Disconnection (cross-section)

C

: Quick connector

D

: Hard tube

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