Nissan Murano Z51. Manual - part 644

EM-48

< REMOVAL AND INSTALLATION >

OIL PAN AND OIL STRAINER

3.

Stop engine and wait for 10 minutes.

4.

Check the engine oil level again. Refer to 

LU-7, "Inspection"

.

FUEL INJECTOR AND FUEL TUBE

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< REMOVAL AND INSTALLATION >

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FUEL INJECTOR AND FUEL TUBE

Exploded View

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CAUTION:

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

Removal and Installation

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REMOVAL

WARNING:

• Put a “CAUTION: FLAMMABLE” sign in the workshop.
• Be sure to work in a well ventilated area and furnish workshop with a CO

2

 fire extinguisher.

• Never smoke while servicing fuel system. Keep open flames and sparks away from the work area.
• To avoid the danger of being scalded, never drain engine coolant when engine is hot.

1.

Remove radiator core support covers (RH and LH), air duct (inlet), air cleaner cases (upper and lower)
with mass air flow sensor and air duct assembly. Refer to 

EM-31, "Exploded View"

.

2.

Remove engine cover. Refer to 

EM-29, "Exploded View"

.

3.

Release the fuel pressure. Refer to 

EC-530, "Inspection"

.

4.

Remove front wiper arm and extension cowl top. Refer to 

WW-130, "Exploded View"

 and 

EXT-21,

"Exploded View"

.

1.

Fuel feed hose

2.

Quick connector cap

3.

Fuel tube

4.

O-ring

5.

Fuel damper

6.

Fuel damper cap

7.

Clip

8.

O-ring (black)

9.

Fuel injector

10. O-ring (green)

A.

Refer to 

EM-49

Refer to 

GI-4, "Components"

 for symbols in the figure.

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EM-50

< REMOVAL AND INSTALLATION >

FUEL INJECTOR AND FUEL TUBE

5.

Drain engine coolant, or when water hoses are disconnected, attach plug to prevent engine coolant leak-
age. Refer to 

CO-11, "Draining"

 or 

EM-33, "Exploded View"

.

CAUTION:

Perform this step when the engine is cold.

6.

Remove intake manifold collector. Refer to 

EM-33, "Exploded View"

.

7.

When separating fuel feed hose and fuel tube connection, disconnect quick connector as follows:

a.

Remove quick connector cap from quick connector.

b.

Disconnect quick connector from fuel tube as follows:

CAUTION:

Disconnect quick connector by using the quick connector release (commercial service tool: J-
45488), not by picking out retainer tabs.

i.

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

ii.

Insert the quick connector release (A) into quick connector (2)
until sleeve (B) contacts and goes no further. Hold quick connec-
tor 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.

iii.

Draw and pull out quick connector straight from fuel tube (1).

CAUTION:

• Pull quick connector (E) holding position (D) as shown 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 leakage 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 (with damper) dur-

ing installation/removal.

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

age and foreign materials, cover them completely with
plastic bags, etc. (A) or something similar.

8.

Disconnect harness connector from fuel injector.

9.

Loosen mounting bolts in the reverse order as shown in the fig-
ure, and remove fuel tube and fuel injector assembly.

CAUTION:

Never tilt fuel tube, or remaining fuel in pipes may flow out
from pipes.

C

: Insert and retain

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: Engine front

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FUEL INJECTOR AND FUEL TUBE

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10. Remove fuel injector from fuel tube as follows:

a.

Open and remove clip (1).

b.

Remove fuel injector (2) from fuel tube (5) by pulling straight.

CAUTION:

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

tube.

• Be careful not to damage injector nozzle during removal.
• Never bump or drop fuel injector.
• Never disassemble fuel injector.

11. Remove fuel damper from fuel tube.

INSTALLATION

1.

Install fuel damper as follows:

a.

Install new O-ring (2) to fuel tube (1) as shown. When handling
new O-ring, be careful of the following caution:

CAUTION:

• Handle O-ring with bare hands. Never wear gloves.
• Lubricate O-ring with new engine oil.
• Never clean O-ring with solvent.
• Check 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 was stretched while it was being
attached, never insert it quickly into fuel tube.

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

b.

Install spacer (3) to fuel damper (4).

c.

Insert fuel damper straight into fuel tube.

CAUTION:

• Insert straight, checking that the axis is lined up.
• Never pressure-fit with excessive force.

• Insert fuel damper until (B) is touching (A) of fuel tube.

d.

Tighten bolts evenly in turn.
• After tightening bolts, check that there is no gap between fuel

damper cap (5) and fuel tube.

2.

Install new O-rings to fuel injector paying attention to the following.

CAUTION:

• Upper and lower O-ring 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.
• Check 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 was stretched while it was being attached, never insert it quickly
into fuel tube.

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

3

: O-ring (green)

4

: O-ring (black)

A

: Installed condition

B

: Clip mounting groove

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Reference value

: 130 N (13.3 kg, 29.2 lb)

Fuel tube side

: Black

Nozzle side

: Green

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