air INFINITI FX35 2005 Service Manual

EM-6
[VQ35DE]
PRECAUTIONS
Revision: 2005 July 2005 FX
Precautions for Assembly and InstallationABS00E3N

Use torque wrench to tighten bolts or nuts to specification.

When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the
ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is speci-
fied, do exactly as specified.

Replace with new gasket, packing, oil seal or O-ring.

Thoroughly wash, clean, and air-blow each part. Carefully check engine oil or engine coolant passages for
any restriction and blockage.

Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust.
Before assembly, oil sliding surfaces well.

Release air within route when refilling after draining engine coolant.

After repairing, start the engine and increase engine speed to check engine coolant, fuel, engine oil, and
exhaust gases for leakage.
Precautions for Angle TighteningABS00E3O

Use the angle wrench [SST: KV10112100 (BT8653-A)] for the final tightening of the following engine parts:
–Cylinder head bolts
–Main bearing cap bolts
–Connecting rod cap bolts
–Crankshaft pulley bolt (No the angle wrench is required as bolt flange is provided with notches for angle
tightening)

Do not use a torque value for final tightening.

The torque value for these parts are for a preliminary step.

Ensure thread and seat surfaces are clean and coated with engine oil.
Precautions for Liquid GasketABS00E3P
REMOVAL OF LIQUID GASKET SEALING

After removing mounting nuts and bolts, separate the mating
surface using the seal cutter [SST] and remove old liquid gasket
sealing.
CAUTION:
Be careful not to damage the mating surfaces.

Tap the seal cutter to insert it, and then slide it by tapping on the
side as shown in the figure.

In areas where the seal cutter is difficult to use, use a plastic
hammer to lightly tap the parts, to remove it.
CAUTION:
If for some unavoidable reason tool such as a screwdriver
is used, be careful not to damage the mating surfaces.
LIQUID GASKET APPLICATION PROCEDURE
1. Using a scraper, remove old liquid gasket adhering to the gasket application surface and the mating surface.

Remove liquid gasket completely from the groove of the gas-
ket application surface, mounting bolts, and bolt holes.
2. Wipe the liquid gasket application surface and the mating sur- face with white gasoline (lighting and heating use) to remove
adhering moisture, grease and foreign materials.
PBIC0002E
PBIC0003E

EM-10
[VQ35DE]
PREPARATION
Revision: 2005 July 2005 FX
Commercial Service ToolsABS004TU
KV10114400
(J38365)
Heated oxygen sensor wrench Loosening or tightening air fuel ratio sensor 1
a: 22 mm (0.87 in)
KV10117700
(J44716)
Ring gear stopper Removing and installing crankshaft pulley
10006 31U00
(—)
Engine rear slinger Removing and installing oil pan (upper) for on
vehicle service
—
(J-45488)
Quick connector release Removing fuel tube quick connectors in
engine room
Tool number
(Kent-Moore No.)
Tool name Description
NT636
NT822
SBIA0530E
PBIC0198E
(Kent-Moore No.)
Tool name Description
(—)
Power tool Loosening nuts and bolts
(BT3373-F)
Belt tension gauge Checking drive belt tension
PBIC0190E
AMA126

EM-12
[VQ35DE]
PREPARATION
Revision: 2005 July 2005 FX
(—)
Valve guide drift Removing and installing valve guide
Intake and Exhaust:
a: 9.5 mm (0.374 in) dia.
b: 5.5 mm (0.217 in) dia.
(—)
Valve guide reamer (1): Reaming valve guide inner hole
(2): Reaming hole for oversize valve guide
Intake and Exhaust:
d
1 : 6.0 mm (0.236 in) dia.
d
2 : 10.2 mm (0.402 in) dia.
(J-43897-18)
(J-43897-12)
Oxygen sensor thread cleaner Reconditioning the exhaust system threads
before installing a new air fuel ratio sensor
and heated oxygen sensor (Use with anti-
seize lubricant shown below.)
a: J-43897-18 [18 mm (0.71 in) dia.] for
zirconia heated oxygen sensor and air fuel
ratio sensor
b: J-43897-12 [12 mm (0.47 in) dia.] for
titania heated oxygen sensor
(—)
Anti-seize lubricant (Permatex 133AR
or equivalent meeting MIL
specification MIL-A-907) Lubricating oxygen sensor thread cleaning
tool when reconditioning exhaust system
threads
(Kent-Moore No.)
Tool name Description
NT015
NT016
AEM488
AEM489

EM-14
[VQ35DE]
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
Revision: 2005 July 2005 FX
Use the Chart Below to Help You Find the Cause of the Symptom.ABS004TW
1. Locate the area where noise occurs.
2. Confirm the type of noise.
3. Specify the operating condition of the engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
A: Closely related B: Related C: Sometimes related —: Not related Location
of noise Type of
noise Operating condition of engine
Source of noise Check item Refer-
ence page
Before
warm- up After
warm- up When
start- ing When
idling When
racing While
driving
Top of
engine
Rocker
cover
Cylinder
head Ticking or
clicking CA—AB— Tappet
noise Valve clearance
EM-93
Rattle C A — A B C Camshaft
bearing
noise Camshaft runout
Camshaft journal oil
clearance EM-86EM-86
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil pan Slap or
knock —A—B B— Piston pin
noise Piston to piston pin oil
clearance
Connecting rod bush-
ing oil clearance EM-140
EM-142
Slap or
rap A——B B A Piston
slap noise Piston to cylinder bore
clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsion EM-144EM-141
EM-141
EM-142
Knock A B C B B B
Connect-
ing rod
bearing
noise Connecting rod bush-
ing oil clearance
Connecting rod bear-
ing oil clearance EM-142EM-146
Knock A B — A B C
Main
bearing
noise Main bearing oil clear-
ance
Crankshaft runout EM-147
EM-146
Front of
engine
Timing
chain
case Tapping or
ticking AA—BBB Timing
chain and
timing
chain ten-
sioner
noise Timing chain cracks
and wear
Timing chain tensioner
operation EM-72
EM-64
Front of
engine Squeak-
ing or fizz-
ing AB—B—C Drive belts
(Sticking
or slip-
ping) Drive belts deflection
EM-15
CreakingABABAB Drive belts
(Slipping) Idler pulley bearing
operation
Squall
Creak AB—BAB Water
pump
noise Water pump operation CO-22,
"WATER
PUMP"

AIR CLEANER AND AIR DUCT EM-17
[VQ35DE]
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Revision: 2005 July 2005 FX
AIR CLEANER AND AIR DUCTPFP:16500
ComponentsABS00E5V
Removal and InstallationABS004U0
REMOVAL
1. Remove engine cover with power tool. Refer to EM-19, "INTAKE MANIFOLD COLLECTOR" .

This work is unnecessary when parts located forward of mass air flow sensor are removed/installed.
2. Remove air duct (inlet) and power duct.
3. Disconnect mass air flow sensor harness connector.
4. Disconnect PCV hose.
5. Remove air cleaner case/mass air flow sensor and air duct disconnecting their joints.

Add marks as necessary for easier installation.
6. Remove mass air flow sensor from air cleaner case. CAUTION:
Handle mass air flow sensor with the following cares.

Do not shock it.

Do not disassemble it.

Do not touch its sensor.
7. Remove resonator in fender, lifting left fender protector.
INSPECTION AFTER REMOVAL
Inspect air hoses for cracks or tear.
1. Air hose 2. PCV hose 3. Air duct
4. Air hose 5. Power duct 6. Clip
7. Air duct (inlet) 8. Resonator 9. Grommet
10. Air cleaner case 11. Air cleaner filter 12. Air cleaner case
13. O-ring 14. Mass air flow sensor
SBIA0462E

EM-18
[VQ35DE]
AIR CLEANER AND AIR DUCT
Revision: 2005 July 2005 FX

If anything found replace air hose.
INSTALLATION
Note the following, and install in the reverse order of removal.

Align marks. Attach each joint. Screw clamps firmly.

To position air cleaner case, refer to EM-18, "Changing Air Cleaner Filter" .
Changing Air Cleaner FilterABS004U1
INSPECTION
Check status (fouling, damage, etc.) of air cleaner filter at power duct
hole.
REMOVAL
Removal in the order below.
1. Remove air duct (inlet) from air cleaner case.
2. Disconnect harness connector from mass air flow sensor.
3. Loosen clamp bolts of air hose.
4. Remove mounting bolts for air cleaner case. Remove air cleaner case/mass air flow sensor/air hose assembly.
5. Unhook clips and open air cleaner case, and remove air cleaner filter.
INSTALLATION
Note the following, and install in the reverse order of removal.

If grommet at bottom of air cleaner case comes off together with
air cleaner case, fix it to vehicle before installation.

Look at internal bottom face through power duct hole, and posi-
tion air cleaner case with resonator upper end circle and air
cleaner case round hole aligned. Then push air cleaner case
straight down.

At this time, check by hand if protrusion at bottom of air cleaner
case has been inserted into grommet on vehicle side.

Clip power duct with bulge on reverse side of lower end
engaged with air cleaner case.
SBIA0463E
SBIA0464E
KBIA0954E

EM-20
[VQ35DE]
INTAKE MANIFOLD COLLECTOR
Revision: 2005 July 2005 FX
1. Remove engine cover with power tool.
2. Disconnect water hoses from intake manifold collector (upper), attach blind plug to prevent engine coolant leakage.
CAUTION:

Perform this step when the engine is cold.

Do not spill engine coolant on drive belts.
3. Remove air cleaner case and air duct. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
4. Remove electric throttle control actuator as the following:
a. Disconnect harness connector.
b. Loosen mounting bolts in reverse order as shown in the figure. CAUTION:

Handle carefully to avoid any shock to electric throttle
control actuator.

Do not disassemble.
5. Remove fuel sub-tube mounting bolt to disconnect from rear of intake manifold collector (lower). Refer to EM-45, "
FUEL INJECTOR AND FUEL TUBE" .
6. Disconnect vacuum hose and water hose from intake manifold collector (upper).
7. Remove EVAP canister purge volume control solenoid valve bracket mounting bolt from intake manifold collector (upper).
SBIA0486E
KBIA0957E

INTAKE MANIFOLD COLLECTOR EM-23
[VQ35DE]
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Revision: 2005 July 2005 FX

Clamp hose at location of 3 to 7 mm (0.12 to 0.28 in) from hose end.
Electric Throttle Control Actuator

Install gasket with positioning no-protrusion surface upward or downward.

Tighten in numerical order as shown in the figure.

Perform the “Throttle Valve Closed Position Learning” when har-
ness connector of electric throttle control actuator is discon-
nected. Refer to EC-96, "
Throttle Valve Closed Position
Learning" .

Perform the “Idle Air Volume Learning” and “Throttle Valve
Closed Position Learning” when electric throttle control actuator
is replaced. Refer to EC-97, "
Idle Air Volume Learning" .
KBIA0957E

EM-26
[VQ35DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
Revision: 2005 July 2005 FX
EXHAUST MANIFOLD AND THREE WAY CATALYSTPFP:14004
ComponentsABS00E5Y
Removal and InstallationABS004U4
REMOVAL
WARNING:
Perform the work when the exhaust and cooling system have completely cooled down.
1. Remove engine cover with power tool. Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" .
2. Drain engine coolant. Refer to CO-11, "
Changing Engine Coolant" .
CAUTION:

Perform this step when the engine is cold.

Do not spill engine coolant on drive belts.
3. Remove air cleaner case and air duct. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
4. Remove front and rear engine undercover and front cross bar with power tool.
5. Disconnect heated oxygen sensors 2 (bank 1 and bank 2) harness connectors.
1. Heated oxygen sensor 2 (bank 1) 2. Three way catalyst (right bank) 3. Gasket
4. Air fuel ratio sensor 1 (bank 1) 5. Exhaust manifold cover (right bank) 6. Exhaust manifold (right bank)
7. Exhaust manifold (left bank) 8. Exhaust manifold cover (left bank) 9. Three way catalyst (left bank)
10. Air fuel ratio sensor 1 (bank 2) 11. Heated oxygen sensor 2 (bank 2)
PBIC3103E

EXHAUST MANIFOLD AND THREE WAY CATALYST EM-27
[VQ35DE]
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Revision: 2005 July 2005 FX
6. Using the heated oxygen sensor wrench [SST], remove heated
oxygen sensors 2 (bank 1 and bank 2).
CAUTION:

Be careful not to damage heated oxygen sensor.

Discard any heated oxygen sensor which has been
dropped from a height of more than 0.5 m (19.69 in) onto
a hard surface such as a concrete floor; replace with a
new sensor.
7. Remove exhaust mounting bracket between three way catalysts (right and left bank) and transmission. Refer to EX-3, "
EXHAUST SYSTEM" .
8. Remove three way catalysts (right and left bank).
9. Disconnect air fuel ratio sensor 1 (bank 1 and bank 2) harness connectors and remove harness clip.
10. Using the heated oxygen sensor wrench [SST], remove air fuel ratio sensor 1 (bank 1 and bank 2).
CAUTION:

Be careful not to damage air fuel ratio sensor.

Discard any air fuel ratio sensor which has been dropped
from a height of more than 0.5 m (19.69 in) onto a hard
surface such as a concrete floor; replace with a new sen-
sor.
11. Remove water pipe and heater pipe on both right and left side. Refer to CO-28, "
WATER OUTLET AND
WATER PIPING" .
12. Remove exhaust manifold cover (right and left bank).
13. Loosen mounting nuts in the reverse order as shown in the fig- ure to remove exhaust manifold with power tool.
NOTE:
Disregard the numerical order No. 7 and 8 in removal.
14. Remove gaskets. CAUTION:
Cover engine openings to avoid entry of foreign materials.
KBIA1740E
SBIA0575E
PBIC2042E