2004 INFINITI FX35 spark plug gap

EM-4Revision: 2004 November 2004 FX35/FX45INSTALLATION ..................................................222
Removal and Installation of Rear Oil Seal ............223
REMOVAL .........................................................223
INSTALLATION ..................................................223
CYLINDER HEAD ...................................................224
On-Vehicle Service ...............................................224
CHECKING COMPRESSION PRESSURE .......224
Removal and Installation ......................................225
REMOVAL .........................................................225
INSPECTION AFTER REMOVAL ......................226
INSTALLATION ..................................................226
Disassembly and Assembly ..................................228
DISASSEMBLY .................................................228
ASSEMBLY .......................................................229
Inspection After Disassembly ...............................230
VALVE DIMENSIONS ........................................230
VALVE GUIDE CLEARANCE ............................231
VALVE GUIDE REPLACEMENT .......................231
VALVE SEAT CONTACT ...................................232
VALVE SEAT REPLACEMENT .........................233
VALVE SPRING SQUARENESS .......................234
VALVE SPRING DIMENSIONS AND VALVE
SPRING PRESSURE LOAD .............................235
ENGINE ASSEMBLY ..............................................236
Removal and Installation ......................................236
REMOVAL .........................................................236
INSTALLATION ..................................................239
INSPECTION AFTER INSTALLATION ..............239
CYLINDER BLOCK .................................................240
Disassembly and Assembly ..................................240
DISASSEMBLY .................................................241
ASSEMBLY .......................................................244
How to Select Piston and Bearing ........................250
DESCRIPTION ..................................................250
HOW TO SELECT PISTON ...............................250
HOW TO SELECT CONNECTING ROD BEAR-
ING ....................................................................251HOW TO SELECT MAIN BEARING ..................252
Inspection After Disassembly ................................256
CRANKSHAFT END PLAY ................................256
CONNECTING ROD SIDE CLEARANCE .........256
PISTON TO PISTON PIN OIL CLEARANCE .....256
PISTON RING SIDE CLEARANCE ...................257
PISTON RING END GAP ..................................257
CONNECTING ROD BEND AND TORSION .....258
CONNECTING ROD BIG END DIAMETER ......258
CONNECTING ROD BUSHING OIL CLEAR-
ANCE .................................................................258
CYLINDER BLOCK DISTORTION ....................259
MAIN BEARING HOUSING INNER DIAMETER .260
PISTON TO CYLINDER BORE CLEARANCE ..260
CRANKSHAFT MAIN JOURNAL DIAMETER ...261
CRANKSHAFT PIN JOURNAL DIAMETER ......262
CRANKSHAFT OUT-OF-ROUND AND TAPER .262
CRANKSHAFT RUNOUT ..................................262
CONNECTING ROD BEARING OIL CLEAR-
ANCE .................................................................263
MAIN BEARING OIL CLEARANCE ...................264
CRUSH HEIGHT OF MAIN BEARING ..............265
CRUSH HEIGHT OF CONNECTING ROD
BEARING ...........................................................265
DRIVE PLATE ....................................................265
SERVICE DATA AND SPECIFICATIONS (SDS) ....266
Standard and Limit ................................................266
GENERAL SPECIFICATIONS ...........................266
DRIVE BELTS ....................................................266
INTAKE MANIFOLD AND EXHAUST MANI-
FOLD .................................................................266
SPARK PLUG ....................................................267
CAMSHAFT AND CAMSHAFT BEARING .........267
CYLINDER HEAD ..............................................269
CYLINDER BLOCK ............................................272
PISTON, PISTON RING AND PISTON PIN ......273
CONNECTING ROD ..........................................274
CRANKSHAFT ...................................................275
MAIN BEARING .................................................277
CONNECTING ROD BEARING .........................278

SPARK PLUG (PLATINUM-TIPPED TYPE)
EM-43
[VQ35DE]
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EM
Revision: 2004 November 2004 FX35/FX45
SPARK PLUG (PLATINUM-TIPPED TYPE)PFP:22401
Removal and InstallationABS004WI
REMOVAL
1. Remove engine cover with power tool. Refer to EM-19, "INTAKE MANIFOLD COLLECTOR" .
2. Remove ignition coil. Refer to EM-42, "
IGNITION COIL" .
3. Remove spark plug with spark plug wrench (commercial service
tool).
INSPECTION AFTER REMOVAL
Use standard type spark plug for normal condition.
The hot type spark plug is suitable when fouling occurs with the standard type spark plug under conditions
such as:

Frequent engine starts

Low ambient temperatures
The cold type spark plug is suitable when spark knock occurs with the standard type spark plug under condi-
tions such as:

Extended highway driving

Frequent high engine revolution
1. Ignition coil 2. Spark plug
SBIA0568E
SEM294A
MakeNGK
Standard typePLFR5A-11
Hot typePLFR4A-11
Cold typePLFR6A-11
Gap (Nominal) : 1.1 mm (0.043 in)

EM-44
[VQ35DE]
SPARK PLUG (PLATINUM-TIPPED TYPE)
Revision: 2004 November 2004 FX35/FX45
CAUTION:

Do not drop or shock spark plug.

Do not use a wire brush for cleaning.

If plug tip is covered with carbon, spark plug cleaner may
be used.

Checking and adjusting plug gap is not required between
change intervals.
INSTALLATION
Install in the reverse order of removal.Cleaner air pressure:
Less than 588 kPa (6 kg/cm
2 , 85 psi)
Cleaning time:
Less than 20 seconds
SMA773C
SMA806CA

SERVICE DATA AND SPECIFICATIONS (SDS)
EM-147
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
DRIVE BELT
*: If belt tension gauge cannot be installed at check points shown, check drive belt tension at different location on the belt.
INTAKE MANIFOLD COLLECTOR, INTAKE MANIFOLD AND EXHAUST MANIFOLD
Unit: mm (in)
SPARK PLUG
ItemsDeflection adjustment Unit: mm (in) Tension adjustment* Unit: N (kg, lb)
Used belt
New beltUsed belt
New belt
Limit After adjustment Limit After adjustment
Alternator and
power steering
oil pump belt7 (0.28)4 - 5
(0.16 - 0.20)3.5 - 4.5
(0.138 - 0.177)294 (30, 66)730 - 818
(74.5 - 83.5,
164 - 184)838 - 926
(85.5 - 94.5,
188 - 208)
Air conditioner
compressor belt12 (0.47)9 - 10
(0.35 - 0.39)8 - 9
(0.31- 0.35)196 (20, 44)348 - 436
(35.5 - 44.5,
78 - 98)470 - 559
(4 8 - 5 7 ,
106 - 126)
Applied pushing
force98 N (10 kg, 22 lb) —
KBIA1731J
Items Limit
Surface distortionIntake manifold collector upper 0.1 (0.004)
Intake manifold collector lower 0.1 (0.004)
Intake manifold 0.1 (0.004)
Exhaust manifold 0.3 (0.012)
MakeNGK
Standard typePLFR5A-11
Hot typePLFR4A-11
Cold typePLFR6A-11
Gap (nominal)1.1 mm (0.043 in)

EM-186
[VK45DE]
SPARK PLUG (PLATINUM-TIPPED TYPE)
Revision: 2004 November 2004 FX35/FX45
SPARK PLUG (PLATINUM-TIPPED TYPE)PFP:22401
Removal and InstallationABS006IG
REMOVAL
1. Remove engine cover with power tool. Refer to EM-168, "ENGINE ROOM COVER" .
2. Remove ignition coil. Refer to EM-185, "
IGNITION COIL" .
3. Remove spark plug with spark plug wrench (commercial service
tool).
INSPECTION AFTER REMOVAL
Use standard type spark plug for normal condition.
Hot type spark plug is suitable when fouling occurs with standard type spark plug under conditions such as:

Frequent engine starts

Low ambient temperatures
Cold type spark plug is suitable when spark plug knock occurs with standard type spark plug under conditions
such as:

Extended highway driving

Frequent high engine revolution
1. Ignition coil 2. Spark plug
PBIC1589E
SEM294A
MakeNGK
Standard typePLFR5A-11
Hot typePLFR4A-11
Cold typePLFR6A-11
Gap (Nominal) : 1.1 mm (0.043 in)

SPARK PLUG (PLATINUM-TIPPED TYPE)
EM-187
[VK45DE]
C
D
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K
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MA
EM
Revision: 2004 November 2004 FX35/FX45
CAUTION:

Do not drop or shock spark plug.

Do not use wire brush for cleaning.

If plug tip is covered with carbon, spark plug cleaner may
be used.

Checking and adjusting plug gap is not required between
change intervals.
INSTALLATION
Install in the reverse order of removal.Cleaner air pressure:
Less than 588 kPa (6 kg/cm
2 , 85 psi)
Cleaning time:
Less than 20 seconds
SMA773C
SMA806CA

SERVICE DATA AND SPECIFICATIONS (SDS)
EM-267
[VK45DE]
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EM
Revision: 2004 November 2004 FX35/FX45
SPARK PLUG
CAMSHAFT AND CAMSHAFT BEARING
Unit: mm (in)
*: Total indicator reading
Valve Lifter
Unit: mm (in)
Valve Clearance
Unit: mm (in)
*: Approximately 20°C (68°F) MakeNGK
Standard typePLFR5A-11
Hot typePLFR4A-11
Cold typePLFR6A-11
Gap (nominal)1.1 mm (0.043 in)
ItemsStandard Limit
Camshaft journal clearanceNo. 1 0.045 - 0.083 (0.0018 - 0.0033) —
No. 2, 3, 4, 5 0.030 - 0.068 (0.0012 - 0.0027) —
Camshaft journal diameterNo. 1 25.938 - 25.955 (1.0212 - 1.0218) —
No. 2, 3, 4, 5 25.953 - 25.970 (1.0218 - 1.0224) —
Camshaft bracket inner diameter 26.000 - 26.021 (1.0236 - 1.0244) —
Camshaft end play 0.115 - 0.188 (0.0045 - 0.0074) —
Cam height “A”Intake 44.865 - 45.055 (1.7663 - 1.7738) 0.2 (0.008)
Exhaust 43.925 - 44.115 (1.7293 - 1.7368) 0.2 (0.008)
Camshaft runout [TIR*] — 0.02 (0.0008)
Camshaft sprocket runout [TIR*] — 0.15 (0.059)
SEM671
ItemsStandard
Valve lifter outer diameter 33.965 - 33.975 (1.3372 - 1.3776)
Valve lifter hole diameter 34.000 - 34.016 (1.3386 - 1.3392)
Valve lifter clearance 0.025 - 0.051 (0.0010 - 0.0020)
Items Hot Cold* (reference data)
Intake 0.304 - 0.416 (0.012 - 0.016) 0.26 - 0.34 (0.010 - 0.013)
Exhaust 0.308 - 0.432 (0.012 - 0.017) 0.29 - 0.37 (0.011 - 0.015)

MA-20
ENGINE MAINTENANCE (VQ35DE ENGINE)
Revision: 2004 November 2004 FX35/FX45
INSPECTION AFTER REMOVAL
Use standard type spark plug for normal condition.
The hot type spark plug is suitable when fouling occurs with the standard type spark plug under conditions
such as:

Frequent engine starts

Low ambient temperatures
The cold type spark plug is suitable when spark knock occurs with the standard type spark plug under condi-
tions such as:

Extended highway driving

Frequent high engine revolution
CAUTION:

Do not drop or shock spark plug.

Do not use a wire brush for cleaning.

If plug tip is covered with carbon, spark plug cleaner may
be used.

Checking and adjusting plug gap is not required between
change intervals.
INSTALLATION
Install in the reverse order of removal.
Checking EVAP Vapor LinesALS000GO
1. Visually inspect EVAP vapor lines for improper attachment and for cracks, damage, loose connections,
chafing and deterioration.
2. Inspect fuel tank filler cap vacuum relief valve for clogging, sticking, etc.
Refer to EC-643, "
EVAPORATIVE EMISSION SYSTEM" .
MakeNGK
Standard typePLFR5A-11
Hot typePLFR4A-11
Cold typePLFR6A-11
Gap (Nominal) : 1.1 mm (0.043 in)
Cleaner air pressure:
Less than 588 kPa (6 kg/cm
2 , 85 psi)
Cleaning time:
Less than 20 seconds
SMA773C
SMA806CA
: 24.5 N·m (2.5 kg-m, 18 ft-lb)