Infiniti G35 (V35) Sedan. Manual - part 609

FUEL INJECTOR AND FUEL TUBE

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FUEL INJECTOR AND FUEL TUBE

Exploded View

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CAUTION:

Do not 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.

• Do not smoke while servicing fuel system. Keep open flames and sparks away from the work area.
• To avoid the danger of being scalded, do not drain engine coolant when the engine is hot.

1.

Release fuel pressure. Refer to 

EC-543, "Inspection"

.

2.

Disconnect battery cable from the negative terminal. Refer to 

PG-98, "Exploded View"

.

3.

Remove engine cover with power tool. Refer to 

EM-27, "Exploded View"

.

4.

Remove air cleaner case and air duct (RH and LH). Refer to 

EM-25, "Exploded View"

.

1.

Quick connector cap

2.

Fuel feed hose (with damper)

3.

O-ring

4.

Fuel sub tube

5.

O-ring

6.

Fuel damper cap

7.

Fuel damper

8.

O-ring

9.

Fuel tube

10. Clip

11. O-ring (black)

12. Fuel injector

13. O-ring (green)

A.

Refer to 

EM-35

Refer to 

GI-4, "Components"

 for symbol marks in the figure.

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FUEL INJECTOR AND FUEL TUBE

5.

Remove intake manifold collector. Refer to 

EM-27, "Exploded View"

.

6.

Remove fuel feed hose (with damper) (1) from fuel sub-tube (2)
and remove harness bracket (3).

NOTE:
There is no fuel return route.

CAUTION:

• While hoses are disconnected, plug them to prevent fuel

from draining.

• Do not separate damper and hose.

7.

When separating fuel feed hose (with damper) and centralized under-floor piping connection, disconnect
quick connector as follows:

a.

Remove quick connector cap (2) from quick connector connec-
tion on right member side.

b.

Disconnect fuel feed hose (with damper) (1) from bracket hose
clamp.

c.

Disconnect quick connector from centralized under-floor piping as follows:

CAUTION:

Disconnect quick connector by using quick connector release [SST: — (J-45488)], not by picking
out retainer tabs.

i.

With the sleeve side of quick connector release facing quick connector, install quick connector release
onto centralized under-floor piping.

ii.

Insert quick connector release (A) into quick connector (2) until
sleeve (B) 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.

iii.

Draw and pull out quick connector straight from centralized under-floor piping.

CAUTION:

• Pull quick connector holding “D” position as shown in the figure.
• Do not 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.

• Do not expose parts to battery electrolyte or other acids.
• Do not bend or twist connection between quick connector and fuel feed hose (with damper) dur-

ing installation/removal.

: Engine front

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: Centralized under-floor piping

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: Insert and retain

D

: Holding position

E

: Pull quick connector

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FUEL INJECTOR AND FUEL TUBE

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• 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.

Remove fuel sub tube mounting bolt.

9.

Disconnect harness connector from fuel injector.

10. Loosen mounting bolts in reverse order as shown in the figure,

and remove fuel tube and fuel injector assembly.

CAUTION:

Do not tilt it, or remaining fuel in pipes may flow out from
pipes.

11. Remove fuel injector (2) from fuel tube (4) as follows:

a.

Open and remove clip (1).

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 injector nozzles during removal.
• Do not bump or drop fuel injector.
• Do not disassemble fuel injector.

12. Remove fuel sub-tube and fuel damper, if necessary.

INSTALLATION

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: Engine front

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: O-ring

A

: Installed condition

B

: Clip mounting groove

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FUEL INJECTOR AND FUEL TUBE

1.

Install fuel damper (4) 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. Do not wear gloves.
• Lubricate O-ring with new engine oil.
• Do not clean O-ring with solvent.
• Make sure that O-ring and its mating part are free of for-

eign 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, do not insert it quickly into fuel tube.

• Insert new O-ring straight into fuel tube. Do not twist it.

b.

Install spacer (3) to fuel damper.

c.

Insert fuel damper straight into fuel tube.

CAUTION:

• Insert straight, making sure that the axis is lined up.
• Do not 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, make sure that there is no gap between fuel damper cap (5) and fuel tube.

2.

Install fuel sub-tube.
• When handling new O-rings, be careful of the following caution:

CAUTION:

• Handle O-ring with bare hands. Do not wear gloves.
• Lubricate O-ring with new engine oil.
• Do not 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 was stretched while it was being attached, do not insert it
quickly into fuel tube.

• Insert new O-ring straight into fuel tube. Do not decenter or twist it.

• Insert fuel sub-tube straight into fuel tube.
• Tighten mounting bolts evenly in turn.
• After tightening mounting bolts, make sure that there is no gap between flange and fuel tube.

3.

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. Do not wear gloves.
• Lubricate O-ring with new engine oil.
• Do not 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 was stretched while it was being attached, do not insert it
quickly into fuel tube.

• Insert O-ring straight into fuel injector. Do not decenter or twist it.

Reference value

: 130 N (13.3 kg, 29.2 lb)

Fuel tube side

: Black

Nozzle side

: Green

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