2007 INFINITI FX35 fuel

EM-2Revision: 2006 July 2007 FX35/FX45
IGNITION COIL ......................................................
... 42
Components ........................................................ ... 42
Removal and Installation ..................................... ... 42
REMOVAL ........................................................ ... 42
INSTALLATION ................................................. ... 42
SPARK PLUG (PLATINUM-TIPPED TYPE) .......... ... 43
Components ........................................................ ... 43
Removal and Installation ..................................... ... 43
REMOVAL ........................................................ ... 43
INSPECTION AFTER REMOVAL ..................... ... 43
INSTALLATION ................................................. ... 44
FUEL INJECTOR AND FUEL TUBE ..................... ... 45
Components ........................................................ ... 45
Removal and Installation ..................................... ... 45
REMOVAL ........................................................ ... 45
INSTALLATION ................................................. ... 47
INSPECTION AFTER INSTALLATION ............. ... 50
ROCKER COVER .................................................. ... 51
Components ........................................................ ... 51
Removal and Installation ..................................... ... 51
REMOVAL ........................................................ ... 51
INSTALLATION ................................................. ... 52
FRONT TIMING CHAIN CASE .............................. ... 54
Removal and Installation ..................................... ... 54
REMOVAL ........................................................ ... 54
INSTALLATION ................................................. ... 58
INSPECTION AFTER INSTALLATION ............. ... 62
TIMING CHAIN ....................................................... ... 64
Components ........................................................ ... 64
Removal and Installation ..................................... ... 65
REMOVAL ........................................................ ... 65
INSPECTION AFTER REMOVAL ..................... ... 72
INSTALLATION ................................................. ... 72
INSPECTION AFTER INSTALLATION ............. ... 82
CAMSHAFT ............................................................ ... 83
Components ........................................................ ... 83
Removal and Installation ..................................... ... 84
REMOVAL ........................................................ ... 84
INSPECTION AFTER REMOVAL ..................... ... 85
INSTALLATION ................................................. ... 88
INSPECTION AFTER INSTALLATION ............. ... 92
Valve Clearance ................................................... ... 93
INSPECTION .................................................... ... 93
ADJUSTMENT ................................................. ... 96
OIL SEAL ............................................................... ... 98
Removal and Installation of Valve Oil Seal .......... ... 98
REMOVAL ........................................................ ... 98
INSTALLATION ................................................. ... 98
Removal and Installation of Front Oil Seal .......... ... 99
REMOVAL ........................................................ ... 99
INSTALLATION ................................................. ... 99
Removal and Installation of Rear Oil Seal ........... ... 99
REMOVAL ........................................................ ... 99
INSTALLATION ................................................. .100
CYLINDER HEAD .................................................. .101
On-Vehicle Service .............................................. .101
CHECKING COMPRESSION PRESSURE ...... .101
Components ........................................................ .102 Removal and Installation ......................................
.102
REMOVAL ......................................................... .102
INSPECTION AFTER REMOVAL ..................... .103
INSTALLATION ................................................. .104
INSPECTION AFTER INSTALLATION ............. .105
Disassembly and Assembly ................................. .106
DISASSEMBLY ................................................. .106
ASSEMBLY ....................................................... .107
Inspection After Disassembly ............................... .108
VALVE DIMENSIONS ....................................... .108
VALVE GUIDE CLEARANCE ........................... .108
VALVE GUIDE REPLACEMENT ...................... .109
VALVE SEAT CONTACT ................................... .110
VALVE SEAT REPLACEMENT ......................... .110
VALVE SPRING SQUARENESS ...................... . 111
VALVE SPRING DIMENSIONS AND VALVE
SPRING PRESSURE LOAD ............................. .112
ENGINE ASSEMBLY .............................................. .113
Components (2WD Models) ................................. .113
Removal and Installation (2WD Models) .............. .113
REMOVAL ......................................................... .114
INSTALLATION ................................................. .116
INSPECTION AFTER INSTALLATION ............. .117
Components (AWD Models) ................................ .118
Removal and Installation (AWD Models) ............. .118
REMOVAL ......................................................... .119
INSTALLATION ................................................. .121
INSPECTION AFTER INSTALLATION ............. .122
CYLINDER BLOCK ................................................ .123
Components ......................................................... .123
Disassembly and Assembly ................................. .124
DISASSEMBLY ................................................. .124
ASSEMBLY ....................................................... .129
How to Select Piston and Bearing ....................... .136
DESCRIPTION ................................................. .136
HOW TO SELECT PISTON .............................. .136
HOW TO SELECT CONNECTING ROD BEAR-
ING .................................................................... .137
HOW TO SELECT MAIN BEARING ................. .138
Inspection After Disassembly ............................... .141
CRANKSHAFT END PLAY ............................... .141
CONNECTING ROD SIDE CLEARANCE ........ .141
PISTON TO PISTON PIN OIL CLEARANCE .... .141
PISTON RING SIDE CLEARANCE .................. .142
PISTON RING END GAP ................................. .142
CONNECTING ROD BEND AND TORSION .... .143
CONNECTING ROD BIG END DIAMETER ..... .143
CONNECTING ROD BUSHING OIL CLEAR-
ANCE ................................................................ .143
CYLINDER BLOCK DISTORTION ................... .144
MAIN BEARING HOUSING INNER DIAMETER .145
PISTON TO CYLINDER BORE CLEARANCE . .145
CRANKSHAFT MAIN JOURNAL DIAMETER .. .146
CRANKSHAFT PIN JOURNAL DIAMETER ..... .147
CRANKSHAFT OUT-OF-ROUND AND TAPER .147
CRANKSHAFT RUNOUT ................................. .147
CONNECTING ROD BEARING OIL CLEAR-

EM-3
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Revision: 2006 July 2007 FX35/FX45
ANCE ...............................................................
. 147
MAIN BEARING OIL CLEARANCE ................. . 148
MAIN BEARING CRUSH HEIGHT ................... . 149
CONNECTING ROD BEARING CRUSH
HEIGHT ............................................................ . 149
MAIN BEARING CAP BOLT OUTER DIAMETER . 149
CONNECTING ROD BOLT OUTER DIAMETER . 150
DRIVE PLATE .................................................. . 150
OIL JET ............................................................ . 150
OIL JET RELIEF VALVE .................................. . 150
SERVICE DATA AND SPECIFICATIONS (SDS) ... . 151
Standard and Limit .............................................. . 151
GENERAL SPECIFICATIONS ......................... . 151
DRIVE BELT .................................................... . 152
INTAKE MANIFOLD COLLECTOR, INTAKE
MANIFOLD AND EXHAUST MANIFOLD ........ . 152
SPARK PLUG .................................................. . 152
CAMSHAFT AND CAMSHAFT BEARING ....... . 153
CYLINDER HEAD ............................................ . 155
CYLINDER BLOCK .......................................... . 158
PISTON, PISTON RING AND PISTON PIN ..... . 159
CONNECTING ROD ........................................ . 160
CRANKSHAFT ................................................. . 161
MAIN BEARING ............................................... . 162
CONNECTING ROD BEARING ....................... . 163
VK45DE
PRECAUTIONS ..................................................... . 164
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect ..................................... . 164
OPERATION PROCEDURE ............................ . 164
Precautions for Drain Engine Coolant and Engine
Oil ........................................................................ . 164
Precautions for Disconnecting Fuel Piping ......... . 164
Precautions for Removal and Disassembly ........ . 164
Precautions for Inspection, Repair and Replace-
ment .................................................................... . 164
Precautions for Assembly and Installation .......... . 164
Parts Requiring Angle Tightening ........................ . 165
Precautions for Liquid Gasket ............................. . 165
REMOVAL OF LIQUID GASKET SEALING ..... . 165
LIQUID GASKET APPLICATION PROCEDURE . 165
PREPARATION ...................................................... . 167
Special Service Tools .......................................... . 167
Commercial Service Tools ................................... . 169
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ........................................... . 171
NVH Troubleshooting — Engine Noise ............... . 171
Use the Chart Below to Help You Find the Cause
of the Symptom. .................................................. . 172
ENGINE ROOM COVER ....................................... . 173
Components ........................................................ . 173
Removal and Installation ..................................... . 173
REMOVAL ........................................................ . 173
INSTALLATION ................................................ . 173
DRIVE BELTS ........................................................ . 174
Components ........................................................ . 174 Checking Drive Belts ...........................................
.174
Tension Adjustment ............................................. .174
Removal and Installation ..................................... .174
REMOVAL ........................................................ .174
INSTALLATION ................................................ .175
Components ........................................................ .176
Drive Belt Auto Tensioner and Idler Pulley .......... .176
REMOVAL ........................................................ .176
INSTALLATION ................................................ .176
AIR CLEANER AND AIR DUCT ............................ .177
Components ........................................................ .177
Removal and Installation ..................................... .177
REMOVAL ........................................................ .177
INSPECTION AFTER REMOVAL .................... .178
INSTALLATION ................................................ .178
Changing Air Cleaner Filter ................................. .178
REMOVAL ........................................................ .178
INSTALLATION ................................................ .178
INTAKE MANIFOLD .............................................. .179
Components ........................................................ .179
Removal and Installation ..................................... .180
REMOVAL ........................................................ .180
INSPECTION AFTER REMOVAL .................... .182
INSTALLATION ................................................ .182
INSPECTION AFTER INSTALLATION ............. .182
EXHAUST MANIFOLD AND THREE WAY CATA-
LYST ....................................................................... .183
Components ........................................................ .183
Removal and Installation ..................................... .183
REMOVAL ........................................................ .183
INSPECTION AFTER REMOVAL .................... .185
INSTALLATION ................................................ .185
OIL PAN AND OIL STRAINER .............................. .187
Components ........................................................ .187
Removal and Installation ..................................... .187
REMOVAL ........................................................ .187
INSPECTION AFTER REMOVAL .................... .189
INSTALLATION ................................................ .189
INSPECTION AFTER INSTALLATION ............. .190
IGNITION COIL ...................................................... .191
Components ........................................................ .191
Removal and Installation ..................................... .191
REMOVAL ........................................................ .191
INSTALLATION ................................................ .191
SPARK PLUG (PLATINUM-TIPPED TYPE) .......... .192
Components ........................................................ .192
Removal and Installation ..................................... .192
REMOVAL ........................................................ .192
INSPECTION AFTER REMOVAL .................... .192
INSTALLATION ................................................ .193
FUEL INJECTOR AND FUEL TUBE ..................... .194
Components ........................................................ .194
Removal and Installation ..................................... .194
REMOVAL ........................................................ .194
INSTALLATION ................................................ .196
INSPECTION AFTER INSTALLATION ............. .198

PRECAUTIONS EM-5
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Revision: 2006 July 2007 FX35/FX45
[VQ35DE]PRECAUTIONSPFP:00001
Precautions Necessary for Steering Wheel Rotation After Battery DisconnectNBS003FN
NOTE:

This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).

Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″ LOCK ″ position.

Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-II.
Precautions for Drain Engine Coolant and Engine OilNBS003FO
Drain engine coolant and engine oil when the engine is cooled.
Precautions for Disconnecting Fuel PipingNBS003FP

Before starting work, make sure no fire or spark producing items are in the work area.

Release fuel pressure before disconnecting and disassembly.

After disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and DisassemblyNBS003FQ

When instructed to use SST, use specified tools. Always be careful to work safely, avoid forceful or unin-
structed operations.

Exercise maximum care to avoid damage to mating or sliding surfaces.

Cover openings of engine system with a tape or equivalent, if necessary, to seal out foreign materials.

Mark and arrange disassembly parts in an organized way for easy troubleshooting and re-assembly.

When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally
opposite, and so on. If the order of loosening is specified, do exactly as specified. Power tools may be
used in the step.
Precautions for Inspection, Repair and ReplacementNBS003FR
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
Precautions for Assembly and InstallationNBS003FS

Use torque wrench to tighten bolts or nuts to specification.

EM-6
[VQ35DE]
PRECAUTIONS
Revision: 2006 July 2007 FX35/FX45

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.

Dowel pins are used for several parts alignment. When replacing and reassembling parts with dowel pins,
make sure that dowel pins are installed in the original position.

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 TighteningNBS003FT

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 GasketNBS003FU
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: 2006 July 2007 FX35/FX45
Commercial Service ToolsNBS003FW
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: 2006 July 2007 FX35/FX45
(—)
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-20
[VQ35DE]
INTAKE MANIFOLD COLLECTOR
Revision: 2006 July 2007 FX35/FX45
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

EM-24
[VQ35DE]
INTAKE MANIFOLD
Revision: 2006 July 2007 FX35/FX45
INTAKE MANIFOLDPFP:14003
ComponentsNBS003G7
Removal and InstallationNBS003G8
REMOVAL
1. Release fuel pressure. Refer to EC-85, "FUEL PRESSURE RELEASE" .
2. Remove intake manifold collectors (upper and lower). Refer to EM-19, "
INTAKE MANIFOLD COLLEC-
TOR" .
3. Remove fuel tube and fuel injector assembly. Refer to EM-45, "
FUEL INJECTOR AND FUEL TUBE" .
4. Loosen mounting bolts and nuts in reverse order as shown in the figure to remove intake manifold with power tool.
5. Remove gaskets. CAUTION:
Cover engine openings to avoid entry of foreign materials.
1. Harness bracket 2. Intake manifold 3. Gasket
SBIA0487E
PBIC0778E