2004 INFINITI FX35 fuel

FUEL INJECTOR AND FUEL TUBE
EM-189
[VK45DE]
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Revision: 2004 November 2004 FX35/FX45
a. Remove quick connector cap from quick connector connection.
(engine side only)
b. Disconnect quick connector from fuel feed damper as the following:
CAUTION:
Disconnect quick connector by using quick connector release [SST: J-45488], not by picking out
retainer tabs (centralized under-floor piping side).
i. With the sleeve side of quick connector release facing quick connector, install quick connector release
onto fuel tube.
ii. 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.
iii. Draw and pull out quick connector straight from fuel damper.
CAUTION:

Pull quick connector holding “A” 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 during installa-
tion/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 fuel damper and fuel hose assembly from fuel tubes (RH and LH).
CAUTION:

While hoses are disconnected, plug them to prevent fuel from draining.

Do not separate fuel damper and fuel hose.
5. Remove intake manifold (upper) with power tool. Refer to EM-174, "
INTAKE MANIFOLD" .
6. Disconnect harness connector from fuel injector.
SBIA0354E
KBIA0702E
PBIC2205E

EM-190
[VK45DE]
FUEL INJECTOR AND FUEL TUBE
Revision: 2004 November 2004 FX35/FX45
7. 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.
8. Remove spacers on intake manifold (lower).
9. Remove fuel injector from fuel tube as follows:
a. Open and remove clip.
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 injectors.

Do not disassemble fuel injectors.
10. Remove fuel damper (RH) and fuel feed damper.
INSTALLATION
1. Install fuel damper (RH) and fuel feed damper.

When handling 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 O-ring straight into fuel tube. Do not decenter or twist it.

Insert fuel damper (RH) and fuel feed damper straight into fuel tube (RH).

Tighten mounting bolts evenly in turn.

After tightening mounting bolts, make sure that there is no gap between flange and fuel tube (RH).
2. Install O-rings to fuel injector paying attention to the following caution.
CAUTION:

Upper and lower O-ring are different. Be careful not to confuse them.
PBIC2338E
PBIC1264E

FUEL INJECTOR AND FUEL TUBE
EM-191
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Revision: 2004 November 2004 FX35/FX45

Handle O-ring with bare hands. Never 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 tube. Do not decenter or twist it.
3. Install fuel injector to fuel tube as follows:
a. Insert clip into clip mounting groove on fuel injector.

Insert clip so that lug “A” of fuel injector matches notch “A” of
the clip.
CAUTION:

Do not 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 lug “B” of fuel tube matches notch
“B” of the clip.

Make sure that fuel tube flange is securely fixed in flange fix-
ing groove on clip.
c. Make sure that installation is complete by checking that fuel
injector does not rotate or come off.

Make sure that protrusions of fuel injectors are aligned with
cutouts of clips after installation.
4. Install spacers on intake manifold (lower).
5. 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 mounting bolts in two steps in numerical order as
shown in the figure.
6. Connect fuel feed hose on engine side as the following: (Excepting to confirm whether or not there is
quick connector cap, perform same procedure for the side of centralized under-floor piping as well.)
a. Make sure no foreign substances are deposited in and around fuel tube and quick connector, and no dam-
age 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
PBIC2337E
1st step : 10.1 N·m (1.0 kg-m, 7 ft-lb)
2nd step : 23.5 N·m (2.4 kg-m, 17 ft-lb)
PBIC2338E

EM-192
[VK45DE]
FUEL INJECTOR AND FUEL TUBE
Revision: 2004 November 2004 FX35/FX45

Insert fuel tube into quick connector until top spool is com-
pletely inside quick connector, and 2nd level spool exposes
right below quick connector.

Hold “A” position as shown in the figure when inserting fuel
tube into quick connector.
CAUTION:

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 “A” position. Make sure it is completely engaged (connected) so that
it does not come out from fuel tube.
e. Install quick connector cap on quick connector connection. (on
engine side only).
f. Install fuel feed hose to hose clamps.
7. Install in the reverse order of removal after this step.
INSPECTION AFTER INSTALLATION
Check on Fuel Leakage
1. Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
NOTE:
Use mirrors for checking at points out of clear sight.
2. Start engine. With engine speed increased, check again for fuel leakage at connection points.
CAUTION:
Do not touch engine immediately after stopped, as engine becomes extremely hot.
KBIA0272E
SBIA0354E

TIMING CHAIN
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Revision: 2004 November 2004 FX35/FX45
f. Further tighten by 90 degrees. (Angle tightening)

Check the tightening angle by referencing to the notches. The
angle between two notches is 90 degrees.
15. Rotate crankshaft pulley in normal direction (clockwise when viewed from engine front) to confirm it turns
smoothly.
16. Install in the reverse order of removal after this step.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in guide may gen-
erate a pounding noise during and just after engine start. However, this does not indicate an unusualness.
Noise will stop after hydraulic pressure rises.
INSPECTION AFTER INSTALLATION

Before starting engine, check the levels of engine coolant, lubrications and working fluid. If less than
required quantity, fill to the specified level.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of engine coolant, engine oil and working
fluid, fuel and exhaust gas.

Bleed air from passages in pipes and tubes of applicable lines, such as in cooling system.

After cooling down engine, again check amounts of engine coolant, engine oil and working fluid. Refill to
specified level, if necessary.
Summary of the inspection items:
PBIC2346E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Working fluid Level Leakage Level

EM-224
[VK45DE]
CYLINDER HEAD
Revision: 2004 November 2004 FX35/FX45
CYLINDER HEADPFP:11041
On-Vehicle ServiceABS006IP
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to EC-700, "
FUEL PRESSURE RELEASE" .
a. Remove fuel pump fuse to avoid fuel injection during measure-
ment.
3. Remove engine cover with power tool. Refer to EM-168, "
ENGINE ROOM COVER" .
4. Remove ignition coil and spark plug from each cylinder. Refer to EM-185, "
IGNITION COIL" and EM-186,
"SPARK PLUG (PLATINUM-TIPPED TYPE)" .
5. Connect engine tachometer (not required in use of CONSULT-II).
6. Install compression gauge with adapter (SST or commercial ser-
vice tool) onto spark plug hole.

Use compression gauge adapter (SST) which is required on
No. 7 and No. 8 cylinders.

Use compression gauge adapter (if no SST is used) whose
picking up end inserted to spark plug hole is smaller than 20
mm (0.79 in) in diameter. Otherwise, it may be caught by cyl-
inder head during removal.
7. With accelerator pedal fully depressed, turn ignition switch to “START” for cranking. When the gauge
pointer stabilizes, read the compression pressure and engine rpm. Perform these steps to check each cyl-
inder.
Compression pressure:
Unit: kPa (kg/cm2 , psi) /rpm
CAUTION:
Always use a fully changed battery to obtain specified engine speed.
PBIB1482E
PBIC1554E
SBIA0533E
Standard Minimum Deferential limit between cylinders
1,320 (13.5, 191) / 300 1,130 (11.5, 164) / 300 98 (1.0, 14) / 300

EM-236
[VK45DE]
ENGINE ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
ENGINE ASSEMBLYPFP:10001
Removal and InstallationABS006IT
WARNING:

Situate vehicle on a flat and solid surface.

Place chocks at front and back of rear wheels.

For engines not equipped with engine slingers, attach proper slingers and bolts described in
PARTS CATALOG.
CAUTION:

Always be careful to work safely, avoid forceful or uninstructed operations.

Do not start working until exhaust system and engine coolant are cool enough.

If items or work required are not covered by the engine section, refer to the applicable sections.

Always use the support point specified for lifting.

Use either 2-point lift type or separate type lift as best you can. If board-on type is used for
unavoidable reasons, support at the rear axle jacking point with transmission jack or similar tool
before starting work, in preparation for the backward shift of center of gravity.

For supporting points for lifting and jacking point at rear axle, refer to GI-42, "Garage Jack and
Safety Stand" .
REMOVAL
Outline
At first, remove engine, transmission assembly and front final drive with front suspension member downward.
Then separate engine from transmission.
Preparation
1. Release fuel pressure. Refer to EC-700, "FUEL PRESSURE RELEASE" .
1. Engine mounting insulator (rear) 2. Engine rear member 3. Grommet
4. Collar 5. Plate 6. Engine mounting bracket (LH)
7. Engine mounting insulator (LH) 8. Engine mounting bracket (RH) 9. Engine mounting insulator (RH)
PBIC2364E

ENGINE ASSEMBLY
EM-237
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Revision: 2004 November 2004 FX35/FX45
2. Drain engine coolant from radiator. Refer to CO-36, "Changing Engine Coolant" .
3. Disconnect both battery terminal. Refer to SC-4, "
BATTERY" .
4. Remove crankshaft position sensor (POS) from transmission.
CAUTION:

Handle carefully to avoid dropping and shocks.

Do not disassemble.

Do not allow metal powder to adhere to magnetic part at sensor tip.

Do not place sensors in a location where they are exposed to magnetism.
5. Remove the following parts:

Hood assembly; Refer to BL-14, "HOOD" .

Engine cover; Refer to EM-168, "ENGINE ROOM COVER" .

Front and rear engine undercover

Air duct (inlet), air duct and air cleaner case assembly; Refer to EM-172, "AIR CLEANER AND AIR
DUCT" .

Drive belts; Refer to EM-169, "DRIVE BELTS" .

Radiator and radiator hoses (upper and lower); Refer to CO-39, "RADIATOR" .

Front road wheels and tires
6. Discharge refrigerant from A/C circuit. Refer to ATC-137, "
REFRIGERANT LINES" .
Engine Room LH
1. Disconnect engine room harness from the engine side and set it aside for easier work.
2. Disconnect heater hoses, and install plugs to avoid leakage of engine coolant.
3. Disconnect ground cable from exhaust manifold cover to vehicle.
4. Disconnect vacuum hose between vehicle and engine and set it aside.
5. Remove A/C piping from A/C compressor, and temporarily fasten it on vehicle with a rope. Refer to AT C -
139, "Components" .
Engine Room RH
1. Disconnect fuel feed hose and EVAP hose. Refer to EM-188, "FUEL INJECTOR AND FUEL TUBE" .
CAUTION:
Fit plugs onto disconnected hose to prevent fuel leak.
2. Disconnect engine room harness from the engine side and set it aside for easier work.
3. Disconnect ground cable from exhaust manifold cover to vehicle.
4. Disconnect vacuum hose between vehicle and engine and set it aside.
5. Disconnect reservoir tank of power steering oil pump from engine, and move it aside for easier work.
CAUTION:
When temporarily securing, keep reservoir tank upright to avoid a fluid leak.
Vehicle underbody
1. Remove front cross bar. Refer to FSU-6, "FRONT SUSPENSION ASSEMBLY" .
2. Disconnect power steering oil pump from engine. Move it from its location and secure with a rope for eas-
ier work. Refer to PS-33, "
Removal and Installation (VK45DE models)" .
3. Remove A/T fluid cooler tube. Refer to AT- 2 6 9 , "
Removal and Installation (AWD models)" .
4. Remove exhaust front tube and center muffler with power tool. Refer to EX-3, "
EXHAUST SYSTEM" .
5. Remove RH and LH transverse link mounting bolts and nuts. Refer to FSU-14, "
TRANSVERSE LINK" .
6. Disconnect stabilizer connecting rod lower. Refer to FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
7. Remove A/T control rod at control device assembly side. Then temporarily secure it on transmission, so
that it does not sag. Refer to AT- 2 3 3 , "
SHIFT CONTROL SYSTEM" .
8. Remove rear plate cover, then remove drive plate to torque converter connecting bolts. Refer to AT- 2 6 9 ,
"Removal and Installation (AWD models)" .
9. Disconnect steering lower joint at power steering gear assembly side, and release steering lower shaft.
Refer to PS-12, "
STEERING COLUMN" .
10. Remove rear propeller shaft. Refer to PR-6, "
REAR PROPELLER SHAFT" .