Nissan Qashqai (2007-2010). Manual — part 52

EM-156

< ON-VEHICLE REPAIR >

[MR20DE]

FUEL INJECTOR AND FUEL TUBE

3.

Disconnect quick connector with the following procedure. Dis-
connect fuel feed hose (1) from fuel tube (3).
NOTE:
There is no fuel return path.

a.

Remove quick connector cap (2) from quick connector connec-
tion.

b.

Disconnect fuel feed hose from hose clamp.

c.

With the sleeve side of quick connector release facing quick connector, install quick connector release
onto fuel tube.

d.

Insert quick connector release into quick connector until sleeve
contacts and goes no further. Hold quick connector release on
that position.

CAUTION:

Inserting quick connector release hard will not disconnect
quick connector. Hold quick connector release where it
contacts and goes no further.

e.

Draw and pull out quick connector straight from fuel tube.

CAUTION:

• Pull quick connector holding “A” position in the figure.
• Never pull with lateral force applied. O-ring inside quick

connector may be damaged.

• Prepare container and cloth beforehand as fuel will leak out.
• Avoid fire and sparks.
• Keep parts away from heat source. Especially, be careful when welding is performed around

them.

• Never expose parts to battery electrolyte or other acids.
• Never bend or twist connection between quick connector and fuel feed hose during installation/

removal.

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

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

4.

Disconnect harness connector from fuel injector.

5.

Remove fuel tube and fuel injector assembly.
• Loosen mounting bolts in reverse order as shown in the figure.

CAUTION:

• When removing, be careful to avoid any interference with fuel

injector.

• Use a shop cloth to absorb any fuel leaks from fuel tube.

PBIC3157J

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: Engine front

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FUEL INJECTOR AND FUEL TUBE

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< ON-VEHICLE REPAIR >

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6.

Remove fuel injector (3) from fuel tube (1) with the following pro-
cedure:

a.

Open and remove clip (2).

b.

Remove fuel injector from fuel tube by pulling straight.

CAUTION:

• Be careful with remaining fuel that may go out from fuel

tube.

• Be careful not to damage fuel injector nozzle during

removal.

• Never bump or drop fuel injector.
• Never disassemble fuel injector.

INSTALLATION

1.

Note the following, and install O-rings to fuel injector.

CAUTION:

• Upper and lower O-rings are different. Be careful not to confuse them.

• Handle O-ring with bare hands. Never wear gloves.
• Lubricate O-ring with new engine oil.
• Never clean O-ring with solvent.
• Make sure that O-ring and its mating part are free of foreign material.
• When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to

twist or stretch O-ring. If O-ring is stretched while installing, never insert it quickly into fuel tube.

• Insert O-ring straight into fuel tube. Never decenter or twist it.

2.

Install fuel injector (4) to fuel tube (1) with the following proce-
dure:

a.

Insert clip (2) into clip mounting groove (F) on fuel injector.
• Insert clip so that protrusion (G) of fuel injector matches cut-

out (D) of clip.

CAUTION:

• Never reuse clip. Replace it with a new one.
• Be careful to keep clip from interfering with O-ring. If

interference occurs, replace O-ring.

b.

Insert fuel injector into fuel tube with clip attached.
• Insert it while matching it to the axial center.
• Insert fuel injector so that protrusion (B) of fuel tube matches

cut-out (C) of clip.

• Make sure that fuel tube flange (A) is securely fixed in flange

fixing groove (E) on clip.

c.

Make sure that installation is complete by making sure that fuel
injector does not rotate or come off.

3.

Set fuel tube and fuel injector assembly at its position for installation on cylinder head.

CAUTION:

For installation, be careful not to interfere with fuel injector nozzle.

4.

Install fuel tube and injector assembly onto cylinder.

JPBIA0290ZZ

Fuel tube side

: Black

Nozzle side

: Green

3

: O–ring (black)

5

: O–ring (green)

PBIC3155J

EM-158

< ON-VEHICLE REPAIR >

[MR20DE]

FUEL INJECTOR AND FUEL TUBE

• Tighten mounting bolts in numerical order as shown in the fig-

ure.

5.

Connect harness connector to fuel injector.

6.

Connect fuel feed hose with the following procedure.

a.

Check for damage or foreign material on the fuel tube and quick connector.

b.

Apply new engine oil lightly to area around the top of fuel tube.

c.

Align center to insert quick connector straightly into fuel tube.
• Insert quick connector to fuel tube until the top spool on fuel

tube is inserted completely and the 2nd level spool is posi-
tioned slightly below quick connector bottom end.

CAUTION:

• Hold “A” position in the figure when inserting fuel tube

into quick connector.

• Carefully align center to avoid inclined insertion to pre-

vent damage to O-ring inside quick connector.

• Insert until you hear a “click” sound and actually feel

the engagement.

• To avoid misidentification of engagement with a similar

sound, be sure to perform the next step.

d.

Before clamping fuel feed hose with hose clamp, pull quick connector hard by hand holding “A” position.
Make sure it is completely engaged (connected) so that it does not come out from fuel tube.

e.

Install quick connector cap (2) to quick connector connection.

• Install quick connector cap with the side arrow facing quick

connector side (fuel feed hose side).

CAUTION:

• Make sure that the quick connector and fuel tube are

securely engaged with the quick connector cap mount-
ing groove.

• Quick connector may not be connected correctly if

quick connector cap cannot be installed easily. Remove
the quick connector cap, and then check the connection of quick connector again.

f.

Install fuel feed hose to hose clamp.

7.

Install remaining parts in the reverse order of removal.

Inspection

INFOID:0000000000893942

INSPECTION AFTER INSTALLATION

Check on Fuel Leakage

1.

Turn ignition switch “ON” (with the engine stopped). With fuel pressure applied to fuel piping, make sure
there are no fuel leaks at connection points.
NOTE:
Use mirrors for checking at points out of clear sight.

: Engine front

PBIC3154J

1.

Fuel feed hose

3.

Fuel tube

KBIA0272E

PBIC3157J

FUEL INJECTOR AND FUEL TUBE

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2.

Start the engine. With engine speed increased, make sure again that there are no fuel leaks at connection
points.

CAUTION:

Never touch the engine immediately after stopped, as the engine becomes extremely hot.