2004 INFINITI FX35 oil type

EC-24
[VQ35DE]
PRECAUTIONS
Revision: 2004 November 2004 FX35/FX45

Do not disassemble ECM.

If a battery cable is disconnected, the memory will return to
the ECM value.
The ECM will now start to self-control at its initial value.
Engine operation can vary slightly when the terminal is dis-
connected. However, this is not an indication of a malfunc-
tion. Do not replace parts because of a slight variation.

When connecting ECM harness connector, fasten it
securely with a lever as far as it will go as shown in the fig-
ure.

When connecting or disconnecting pin connectors into or
from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM
pin terminal, when connecting pin connectors.

Securely connect ECM harness connectors.
A poor connection can cause an extremely high (surge)
voltage to develop in coil and condenser, thus resulting in
damage to ICs.

Keep engine control system harness at least 10 cm (4 in)
away from adjacent harness, to prevent engine control sys-
tem malfunctions due to receiving external noise, degraded
operation of ICs, etc.

Keep engine control system parts and harness dry.

Before replacing ECM, perform “ECM Terminals and Refer-
ence Value” inspection and make sure ECM functions prop-
erly. Refer to EC-100
.

Handle mass air flow sensor carefully to avoid damage.

Do not disassemble mass air flow sensor.

Do not clean mass air flow sensor with any type of deter-
gent.

Do not disassemble electric throttle control actuator.

Even a slight leak in the air intake system can cause seri-
ous incidents.

Do not shock or jar the camshaft position sensor (PHASE),
crankshaft position sensor (POS).
PBIB1164E
PBIB1512E
PBIB0090E
MEF040D

EC-294
[VQ35DE]
DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS-
FIRE
Revision: 2004 November 2004 FX35/FX45
5. CHECK IGNITION SPARK
1. Remove ignition coil assembly from rocker cover.
2. Remove spark plug from ignition coil assembly
3. Connect a known-good spark plug to the ignition coil.
4. Disconnect all injector harness connectors.
5. Place end of spark plug against a suitable ground and crank engine.
6. Check for spark.
OK or NG
OK >> GO TO 6.
NG >> Check ignition coil, power transistor and their circuits.
Refer to EC-585, "
IGNITION SIGNAL" .
6. CHECK SPARK PLUGS
Remove the spark plugs and check for fouling, etc.
OK or NG
OK >> GO TO 7.
NG >> Repair or replace spark plug(s) with standard type
one(s). For spark plug type, refer to, MA-14, "
ENGINE
MAINTENANCE (VQ35DE ENGINE)" .
7. CHECK COMPRESSION PRESSURE
Check compression pressure. Refer to EM-98, "
CHECKING COMPRESSION PRESSURE" .
OK or NG
OK >> GO TO 8.
NG >> Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
8. CHECK FUEL PRESSURE
1. Install all removed parts.
2. Release fuel pressure to zero. Refer to EC-51, "
FUEL PRESSURE RELEASE" .
3. Install fuel pressure gauge and check fuel pressure. Refer to EC-52, "
FUEL PRESSURE CHECK" .
OK or NG
OK >> GO TO 10.
NG >> GO TO 9.
SEF575Q
SEF156I
Standard:
1,275 kPa (13.0 kg/cm2 , 185 psi)/300 rpm
Minimum:
981 kPa (10.0 kg/cm
2 , 142 psi)/300 rpm
Difference between each
cylinder:98 kPa (1.0 kg/cm
2 , 14 psi)/300 rpm
At idle: Approx. 350 kPa (3.57 kg/cm
2 , 51 psi)

PRECAUTIONS
EC-671
[VK45DE]
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MA
EC
Revision: 2004 November 2004 FX35/FX45

Do not disassemble ECM.

If a battery cable is disconnected, the memory will return to
the ECM value.
The ECM will now start to self-control at its initial value.
Engine operation can vary slightly when the terminal is dis-
connected. However, this is not an indication of a malfunc-
tion. Do not replace parts because of a slight variation.

When connecting ECM harness connector, fasten it
securely with a lever as far as it will go as shown in the fig-
ure.

When connecting or disconnecting pin connectors into or
from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM
pin terminal, when connecting pin connectors.

Securely connect ECM harness connectors.
A poor connection can cause an extremely high (surge)
voltage to develop in coil and condenser, thus resulting in
damage to ICs.

Keep engine control system harness at least 10 cm (4 in)
away from adjacent harness, to prevent engine control sys-
tem malfunctions due to receiving external noise, degraded
operation of ICs, etc.

Keep engine control system parts and harness dry.

Before replacing ECM, perform ECM Terminals and Refer-
ence Value inspection and make sure ECM functions prop-
erly. Refer to EC-750
.

Handle mass air flow sensor carefully to avoid damage.

Do not disassemble mass air flow sensor.

Do not clean mass air flow sensor with any type of deter-
gent.

Do not disassemble electric throttle control actuator.

Even a slight leak in the air intake system can cause seri-
ous incidents.

Do not shock or jar the camshaft position sensor (PHASE),
crankshaft position sensor (POS).
PBIB1164E
PBIB1512E
PBIB0090E
MEF040D

EC-952
[VK45DE]
DTC P0300 - P0308 MULTIPLE CYLINDER MISFIRE, NO. 1 - 8 CYLINDER MIS-
FIRE
Revision: 2004 November 2004 FX35/FX45
5. CHECK IGNITION SPARK
1. Turn ignition switch OFF.
2. Remove ignition coil assembly from rocker cover.
3. Connect a known-good spark plug to the ignition coil.
4. Disconnect all injector harness connectors.
5. Place end of spark plug against a suitable ground and crank engine.
6. Check for spark.
OK or NG
OK >> GO TO 6.
NG >> Check ignition coil, power transistor and their circuits.
Refer to EC-1262, "
IGNITION SIGNAL" .
6. CHECK SPARK PLUGS
Remove the spark plugs and check for fouling, etc.
OK or NG
OK >> GO TO 7.
NG >> Repair or replace spark plug(s) with standard type
one(s). For spark plug type, refer to, MA-26, "
Changing
Spark Plugs (Platinum-Tipped Type)" .
7. CHECK COMPRESSION PRESSURE
Check compression pressure. Refer to EM-98, "
CHECKING COMPRESSION PRESSURE" .
OK or NG
OK >> GO TO 8.
NG >> Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
8. CHECK FUEL PRESSURE
1. Install all removed parts.
2. Release fuel pressure to zero. Refer to EC-700, "
FUEL PRESSURE RELEASE" .
3. Install fuel pressure gauge and check fuel pressure. Refer to EC-701, "
FUEL PRESSURE CHECK" .
OK or NG
OK >> GO TO 10.
NG >> GO TO 9.
SEF575Q
SEF156I
Standard:
1,320 kPa (13.5 kg/cm2 , 191 psi)/300 rpm
Minimum:
1,130 kPa (11.5 kg/cm
2 , 164 psi)/300 rpm
Difference between each
cylinder:98 kPa (1.0 kg/cm
2 , 14 psi)/300 rpm
At idle: Approx. 350 kPa (3.57 kg/cm
2 , 51 psi)

EM-1
ENGINE MECHANICAL
B ENGINE
CONTENTS
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SECTION EM
A
EM
Revision: 2004 November 2004 FX35/FX45
ENGINE MECHANICAL
VQ35DE
PRECAUTIONS .......................................................... 5
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect .......................................... 5
OPERATION PROCEDURE ................................. 5
Precautions for Drain Engine Coolant ...................... 5
Precautions for Disconnecting Fuel Piping .............. 5
Precautions for Removal and Disassembly ............. 5
Precautions for Inspection, Repair and Replace-
ment ......................................................................... 5
Precautions for Assembly and Installation ............... 5
Parts Requiring Angle Tightening ............................. 6
Precautions for Liquid Gasket .................................. 6
REMOVAL OF LIQUID GASKET SEALING .......... 6
LIQUID GASKET APPLICATION PROCEDURE ..... 6
PREPARATION ........................................................... 8
Special Service Tools ............................................... 8
Commercial Service Tools ...................................... 10
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING .............................................. 13
NVH Troubleshooting —Engine Noise ................... 13
Use the Chart Below to Help You Find the Cause
of the Symptom. ..................................................... 14
DRIVE BELTS ........................................................... 15
Checking Drive Belts .............................................. 15
Tension Adjustment ................................................ 15
ALTERNATOR AND POWER STEERING OIL
PUMP BELT ........................................................ 16
AIR CONDITIONER COMPRESSOR BELT ....... 16
Removal and Installation ........................................ 16
REMOVAL ........................................................... 16
INSTALLATION ................................................... 16
AIR CLEANER AND AIR DUCT ............................... 17
Removal and Installation ........................................ 17
REMOVAL ........................................................... 17
INSTALLATION ................................................... 17
Changing Air Cleaner Filter .................................... 18
INSPECTION ...................................................... 18
REMOVAL ........................................................... 18
INSTALLATION ................................................... 18INTAKE MANIFOLD COLLECTOR .......................... 19
Removal and Installation ........................................ 19
REMOVAL ........................................................... 19
INSPECTION AFTER REMOVAL ....................... 21
INSTALLATION ................................................... 22
INTAKE MANIFOLD ................................................. 24
Removal and Installation ........................................ 24
REMOVAL ........................................................... 24
INSPECTION AFTER REMOVAL ....................... 24
INSTALLATION ................................................... 25
EXHAUST MANIFOLD AND THREE WAY CATA-
LYST .......................................................................... 26
Removal and Installation ........................................ 26
REMOVAL ........................................................... 26
INSPECTION AFTER REMOVAL ....................... 28
INSTALLATION ................................................... 28
OIL PAN AND OIL STRAINER ................................. 30
Removal and Installation ........................................ 30
2WD MODEL ....................................................... 30
REMOVAL ........................................................... 30
INSPECTION AFTER REMOVAL ....................... 32
INSTALLATION ................................................... 32
INSPECTION AFTER INSTALLATION ................ 35
AWD MODEL ...................................................... 36
REMOVAL ........................................................... 36
INSPECTION AFTER REMOVAL ....................... 38
INSTALLATION ................................................... 39
INSPECTION AFTER INSTALLATION ................ 41
IGNITION COIL ......................................................... 42
Removal and Installation ........................................ 42
REMOVAL ........................................................... 42
INSTALLATION ................................................... 42
SPARK PLUG (PLATINUM-TIPPED TYPE) ............. 43
Removal and Installation ........................................ 43
REMOVAL ........................................................... 43
INSPECTION AFTER REMOVAL ....................... 43
INSTALLATION ................................................... 44

EM-3
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EMA
Revision: 2004 November 2004 FX35/FX45MANIFOLD AND EXHAUST MANIFOLD ......... 147
SPARK PLUG ................................................... 147
CAMSHAFT AND CAMSHAFT BEARING ........ 148
CYLINDER HEAD ............................................. 150
CYLINDER BLOCK ........................................... 153
PISTON, PISTON RING AND PISTON PIN ...... 154
CONNECTING ROD ......................................... 155
CRANKSHAFT .................................................. 156
MAIN BEARING ................................................ 157
CONNECTING ROD BEARING ........................ 158
VK45DE
PRECAUTIONS ...................................................... 159
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect ...................................... 159
OPERATION PROCEDURE ............................. 159
Precautions for Drain Engine Coolant .................. 159
Precautions for Disconnecting Fuel Piping .......... 159
Precautions for Removal and Disassembly ......... 159
Precautions for Inspection, Repair and Replace-
ment ..................................................................... 159
Precautions for Assembly and Installation ........... 159
Parts Requiring Angle Tightening ......................... 160
Precautions for Liquid Gasket .............................. 160
REMOVAL OF LIQUID GASKET SEALING ...... 160
LIQUID GASKET APPLICATION PROCEDURE . 160
PREPARATION ....................................................... 162
Special Service Tools ........................................... 162
Commercial Service Tools .................................... 164
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ............................................ 166
NVH Troubleshooting —Engine Noise ................. 166
Use the Chart Below to Help You Find the Cause
of the Symptom. ................................................... 167
ENGINE ROOM COVER ........................................ 168
Removal and Installation ...................................... 168
REMOVAL ......................................................... 168
INSTALLATION ................................................. 168
DRIVE BELTS ......................................................... 169
Checking Drive Belts ............................................ 169
Tension Adjustment .............................................. 169
Removal and Installation ...................................... 169
REMOVAL ......................................................... 169
INSTALLATION ................................................. 170
Drive Belt Auto Tensioner and Idler Pulley ........... 171
REMOVAL ......................................................... 171
INSTALLATION ................................................. 171
AIR CLEANER AND AIR DUCT ............................. 172
Removal and Installation ...................................... 172
REMOVAL ......................................................... 172
INSTALLATION ................................................. 172
Changing Air Cleaner Filter .................................. 173
REMOVAL ......................................................... 173
INSTALLATION ................................................. 173INTAKE MANIFOLD ...............................................174
Removal and Installation ......................................174
REMOVAL .........................................................174
INSPECTION AFTER REMOVAL .....................176
INSTALLATION .................................................176
INSPECTION AFTER INSTALLATION ..............177
EXHAUST MANIFOLD AND THREE WAY CATA-
LYST ........................................................................178
Removal and Installation ......................................178
REMOVAL .........................................................178
INSPECTION AFTER REMOVAL .....................180
INSTALLATION .................................................180
OIL PAN AND OIL STRAINER ...............................181
Removal and Installation ......................................181
REMOVAL .........................................................181
INSPECTION AFTER REMOVAL .....................183
INSTALLATION .................................................183
INSPECTION AFTER INSTALLATION ..............183
IGNITION COIL .......................................................185
Removal and Installation ......................................185
REMOVAL .........................................................185
INSTALLATION .................................................185
SPARK PLUG (PLATINUM-TIPPED TYPE) ...........186
Removal and Installation ......................................186
REMOVAL .........................................................186
INSPECTION AFTER REMOVAL .....................186
INSTALLATION .................................................187
FUEL INJECTOR AND FUEL TUBE ......................188
Removal and Installation ......................................188
REMOVAL .........................................................188
INSTALLATION .................................................190
INSPECTION AFTER INSTALLATION ..............192
ROCKER COVER ...................................................193
Removal and Installation ......................................193
REMOVAL .........................................................193
INSTALLATION .................................................195
TIMING CHAIN ........................................................196
Removal and Installation ......................................196
REMOVAL .........................................................197
INSPECTION AFTER REMOVAL .....................201
INSTALLATION .................................................201
INSPECTION AFTER INSTALLATION ..............207
CAMSHAFT ............................................................208
Removal and Installation ......................................208
REMOVAL .........................................................208
INSPECTION AFTER REMOVAL .....................209
INSTALLATION .................................................212
Valve Clearance ...................................................214
INSPECTION ....................................................214
ADJUSTMENT ..................................................217
OIL SEAL ................................................................221
Removal and Installation of Valve Oil Seal ...........221
REMOVAL .........................................................221
INSTALLATION .................................................221
Removal and Installation of Front Oil Seal ...........222
REMOVAL .........................................................222

EM-14
[VQ35DE]
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
Revision: 2004 November 2004 FX35/FX45
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 engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
A: Closely related B: Related C: Sometimes related —: Not relatedLocation
of noiseType of
noiseOperating condition of engine
Source of
noiseCheck itemRefer-
ence page Before
warm-
upAfter
warm-
upWhen
start-
ingWhen
idlingWhen
racingWhile
driving
Top of
engine
Rocker
cover
Cylinder
headTicking or
clickingCA—AB—Tappet
noiseValve clearanceEM-89
Rattle C A — A B CCamshaft
bearing
noiseCamshaft runout
Camshaft journal oil
clearanceEM-84EM-84
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil panSlap or
knock—A—B B—Piston pin
noisePiston to piston pin oil
clearance
Connecting rod bush-
ing oil clearance (Small
end)EM-136
EM-138
Slap or
rapA——B B APiston
slap noisePiston to cylinder bore
clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsionEM-140EM-137
EM-137
EM-138
Knock A B C B B BConnect-
ing rod
bearing
noiseConnecting rod bush-
ing oil clearance (Small
end)
Connecting rod bear-
ing housing diameter
(Big end)EM-138EM-138
Knock A B — A B CMain
bearing
noiseMain bearing oil clear-
ance
Crankshaft runoutEM-143EM-142
Front of
engine
Timing
chain
caseTapping or
tickingAA—BBBTiming
chain and
chain ten-
sioner
noiseTiming chain cracks
and wear
Timing chain tensioner
operationEM-71
Front of
engineSqueak-
ing or fizz-
ingAB—B—CDrive belts
(Sticking
or slip-
ping)Drive belts deflection
EM-15
CreakingABABABDrive belts
(Slipping)Idler pulley bearing
operation
Squall
CreakAB—BABWater
pump
noiseWater pump operationCO-22,
"WATER
PUMP"

EM-34
[VQ35DE]
OIL PAN AND OIL STRAINER
Revision: 2004 November 2004 FX35/FX45

Tighten bolts in numerical order as shown in the figure.

There are two types of mounting bolts. Refer to the following
for locating bolts.
f. Tighten transmission joint bolts. Refer to AT- 2 6 6 , "
TRANSMISSION ASSEMBLY" .
2. Install oil strainer to oil pump.
3. Install oil pan (lower) as the following:
a. Use scraper to remove old liquid gasket from mating surfaces.

Also remove old liquid gasket from mating surface of oil
pan (upper).
b. Apply liquid gasket thoroughly with tube presser [SST:
WS39930000 ( – )] as in illustration.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
NOTE:
Attaching should be done within 5 minutes after coating.M8 × 100 mm (3.97 in) : 5, 7, 8, 11
M8 × 25 mm (0.98 in) : Except the above
PBIC0783E
SEM958F
PBIC1146E