Nissan Altima L32. Manual - part 653

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FUEL INJECTOR AND FUEL TUBE

8. Loosen bolts in reverse order as shown, and remove fuel tube

and fuel injector assembly.

CAUTION:

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

from pipes.

9. 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.

10. 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.

: Engine front

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3

: O-ring (green)

4

: O-ring (black)

A

: Installed condition

B

:  Clip  groove

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Reference value

: 130 N (13.3 kg, 29.2 lb)

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FUEL INJECTOR AND FUEL TUBE

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• 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. Install fuel injector to fuel tube as follows:
a. Insert clip (3) into clip groove (F) on fuel injector (5).

• Insert clip so that protrusion (E) of fuel injector matches cutout

(C) of clip.

CAUTION:

• Never reuse clip. Replace it with 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 (1) with clip attached.

• Insert it while matching it to the axial center.

• Insert fuel injector so that protrusion (A) of fuel tube matches

cutout (B) of clip.

• Check that fuel tube flange (G) is securely fixed in flange fixing

groove (D) on clip.

c. Check that installation is complete by checking that fuel injector

does not rotate or come off.

• Check that protrusions of fuel injectors and fuel tubes are

aligned with cutouts of clips after installation.

4. Install fuel tube and fuel injector assembly to intake manifold.

CAUTION:

Be careful not to let tip of injector nozzle come in contact with other parts.

• Tighten bolts in two steps in numerical order as shown in the

figure.

5. Connect fuel injector harness.
6. Install intake manifold collector. Refer to 

EM-130, "Removal and Installation"

.

7. Connect quick connector between fuel feed hose and fuel tube connection with the following procedure:
a. Check no foreign substances are deposited in and around fuel tube and quick connector, and no damage

on them.

b. Thinly apply new engine oil around fuel tube from tip end to spool end.
c. Align center to insert quick connector straightly into fuel tube.

Fuel tube side

: Black

Nozzle side

: Green

2

: O-ring (black)

4

: O-ring (green)

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: Engine front

1st step

: 10.1 N·m (1.0 kg-m, 7 ft-lb)

2nd step

: 22.0 N·m (2.2 kg-m, 16 ft-lb)

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FUEL INJECTOR AND FUEL TUBE

• Insert quick connector (1) to fuel tube until top spool (2) is

completely inside quick connector, and 2nd level spool (3)

exposes right below quick connector.

CAUTION:

• Hold (A) position as shown 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. Pull quick connector by hand holding position. Check it is completely engaged (connected) so that it does

not come out from fuel tube.

e. Install quick connector cap (3) to quick connector.

• Install quick connector cap with arrow (A) on surface facing in

direction of quick connector (fuel feed hose side).

CAUTION:

If quick connector cap cannot be installed smoothly, quick

connector may have not been installed correctly. Check

connection again.

f.

Secure fuel feed hose to clamp of quick connector cap.

8. Installation is in the reverse order of removal.

INSPECTION AFTER INSTALLATION

Make sure there is no fuel leakage at connections as follows:
1. Apply fuel pressure to fuel lines by turning ignition switch ON (with engine stopped). Then check for fuel

leaks at connections. 

2. Start the engine and rev it up and check for fuel leaks at connections.

CAUTION:

Do not touch engine immediately after stopping as engine is extremely hot.

NOTE:

Use mirrors for checking on connections out of the direct line of sight.

• Perform procedures for “Throttle Valve Closed Position Learning” after finishing repairs. Refer to 

EC-

1053, "THROTTLE VALVE CLOSED POSITION LEARNING : Description"

.

• If electric throttle control actuator is replaced, perform procedures for “Idle Air Volume Learning” after

finishing repairs. Refer to 

EC-1053, "IDLE AIR VOLUME LEARNING : Description"

.

B

: Fitted condition

: Upright insertion

1

: Fuel feed hose

2

: Fuel tube

B

: Upper view

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ROCKER COVER

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ROCKER COVER

Exploded View

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Removal and Installation LH

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REMOVAL

1. Remove the engine cover, using power tool.
2. Remove front air duct.
3. Remove blow by hose from rocker cover.
4. Remove camshaft position sensor.

CAUTION:

• Handle carefully to avoid dropping and shocks.

• Do not disassemble.

• Do not allow metal powder to adhere to magnetic part at

sensor tip (A).

• Do not place sensors in a location where they are

exposed to magnetism.

5. Disconnect the ignition coil connectors.
6. Remove the ignition coils. Refer to 

EM-145, "Removal and Installation LH"

.

CAUTION:

Never shock ignition coils.

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1.

Rocker cover (RH)

2.

Rocker cover gasket (RH)

3.

Rocker cover gasket (LH)

4.

Rocker cover (LH)

A. Follow installation procedure

Front

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