2006 INFINITI M35 spark plug

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CYLINDER HEAD
Revision: 2006 January2006 M35/M45
8. Install valve collet.
Compress valve spring with the valve spring compressor, the
attachment and the adapter (SST). Install valve collet with a
magnet hand.
CAUTION:
When working, take care not to damage valve lifter holes.
Tap valve stem edge lightly with plastic hammer after installa-
tion to check its installed condition.
9. Install valve lifter.
Install it in the original position.
10. Install spark plug tube.
Press-fit spark plug tube as follows:
a. Remove old locking sealant adhering to cylinder head mounting hole.
b. Apply sealant to area within approximately 12 mm (0.47 in) from edge of spark plug tube press-fit side.
Use Genuine High Strength Locking Sealant or equivalent. Refer to GI-48, "
RECOMMENDED
CHEMICAL PRODUCTS AND SEALANTS" .
c. Using drift, press-fit spark plug tube so that its height “H” is as
specified in the figure.
CAUTION:
When press-fitting, take care not to deform spark plug
tube.
After press-fitting, wipe off liquid gasket protruding onto
cylinder-head upper face.
11. Install spark plug with spark plug wrench (commercial service tool).
Inspection after DisassemblyNBS004NV
VALVE DIMENSIONS
Check the dimensions of each valve. For the dimensions, refer to EM-154, "Valve Dimensions" .
If dimensions are out of the standard, replace valve and check valve seat contact. Refer to EM-110,
"VA LV E S E AT C O N TA C T" .
VALVE GUIDE CLEARANCE
Valve Stem Diameter
Measure the diameter of valve stem with micrometer.
Valve Guide Inner Diameter
Measure the inner diameter of valve guide with bore gauge.
PBIC1803E
Standard press-fit height “H”:
: 38.1 - 39.1 mm (1.500 - 1.539 in)
PBIC2638E
Standard
Intake : 5.965 - 5.980 mm (0.2348 - 0.2354 in)
Exhaust : 5.955 - 5.970 mm (0.2344 - 0.2350 in)
SEM938C

SERVICE DATA AND SPECIFICATIONS (SDS)
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Revision: 2006 January2006 M35/M45
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
Unit: mm (in) Deflection 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)
A/C 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
(48 - 57,
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 (0.043)

PRECAUTIONS
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Revision: 2006 January2006 M35/M45
[VK45DE]PRECAUTIONSPFP:00001
Precautions for Procedures without Cowl Top CoverNBS004O5
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Precautions Necessary for Steering Wheel Rotation After Battery DisconnectNBS005RS
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 OilNBS004O7
Drain engine coolant and engine oil when engine is cooled.
Precautions for Disconnecting Fuel PipingNBS004O8
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 DisassemblyNBS004O9
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 tape or the equivalent, if necessary, to seal out foreign materials.
PIIB3706J

PREPARATION
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Revision: 2006 January2006 M35/M45
Commercial Service ToolsNBS004OF
(Kent-Moore No.)
To o l n a m eDescription
(—)
Power toolLoosening nuts and bolts
(—)
Spark plug wrenchRemoving and installing spark plug
(—)
Manual lift table caddyRemoving and installing engine
(—)
1.Compression gauge
2.AdapterChecking compression pressure
(J–24239-01)
Cylinder head bolt wrenchLoosening and tightening cylinder head bolt,
and use with angle wrench [SST:
KV10112100 (BT–8653-A)]
a: 13 (0.51) dia.
b: 12 (0.47)
c: 10 (0.39)
Unit: mm (in)
(—)
Valve seat cutter setFinishing valve seat dimensions
(—)
Piston ring expanderRemoving and installing piston ring
PBIC0190E
S-NT047
ZZA1210D
ZZA0008D
NT583
S-NT048
S-NT030

EM-190
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IGNITION COIL
Revision: 2006 January2006 M35/M45
IGNITION COILPFP:22448
ComponentsNBS004OZ
Removal and InstallationNBS004P0
REMOVAL
1. Remove engine room cover (RH and LH). Refer to EM-173, "ENGINE ROOM COVER" .
2. Remove engine cover with power tool. Refer to EM-179, "
INTAKE MANIFOLD" .
3. Remove air duct (inlet), air cleaner case and air duct and resonator assembly. Refer to EM-177, "
AIR
CLEANER AND AIR DUCT" .
4. Disconnect harness connector from ignition coil.
5. Remove ignition coil.
CAUTION:
Do not shock it.
INSTALLATION
Installation is the reverse order of removal.
1. Ignition coil 2. Spark plug
PBIC1589E

SPARK PLUG (PLATINUM-TIPPED TYPE)
EM-191
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Revision: 2006 January2006 M35/M45
SPARK PLUG (PLATINUM-TIPPED TYPE)PFP:22401
ComponentsNBS004P1
Removal and InstallationNBS004P2
REMOVAL
1. Remove ignition coil. Refer to EM-190, "IGNITION COIL" .
2. Remove spark plug with spark plug wrench (commercial service
tool).
CAUTION:
Do not drop or shock it.
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)

EM-192
[VK45DE]
SPARK PLUG (PLATINUM-TIPPED TYPE)
Revision: 2006 January2006 M35/M45
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
Installation is 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

CYLINDER HEAD
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Revision: 2006 January2006 M35/M45
CYLINDER HEADPFP:11041
On-Vehicle ServiceNBS004PF
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to EC-809, "
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-173, "
ENGINE ROOM COVER" .
4. Remove ignition coil and spark plug from each cylinder. Refer to EM-190, "
IGNITION COIL" and EM-191,
"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 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 the 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