air filter INFINITI FX35 2008 User Guide

EC-712
< SERVICE INFORMATION >[VK45DE]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
Check “A/F ALPHA-B1”, “A/F ALPHA-B2” for approximat
ely 1 minute because they may fluctuate. It is NG
if the indication is out of the SP value even a little.
OK or NG
OK >> GO TO 17.
NG (Less than the SP value)>>GO TO 2.
NG (More than the SP value)>>GO TO 3.
2.CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within the
SP value.
OK or NG
OK >> GO TO 4.
NG (More than the SP value)>>GO TO 19.
3.CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within the
SP value.
OK or NG
OK >> GO TO 6.
NG (More than the SP value)>>GO TO 6.
NG (Less than the SP value)>>GO TO 25.
4.CHECK “A/F ALPHA-B1”, “A/F ALPHA-B2”
1. Stop the engine.
2. Disconnect PCV hose, and then plug it.
3. Start engine.
4. Select “A/F ALPHA-B1”, “A/F AL PHA-B2” in “SPEC” of “DATA MONITOR” mode, and make sure that the
each indication is within the SP value.
OK or NG
OK >> GO TO 5.
NG >> GO TO 6.
5.CHANGE ENGINE OIL
1. Stop the engine.
2. Change engine oil. NOTE:
This symptom may occur when a large amount of gasoline is mixed with engine oil because of driving
conditions (such as when engine oil temperature does not rise enough since a journey distance is too
short during winter). The symptom will not be detec ted after changing engine oil or changing driving con-
dition.
>>INSPECTION END
6.CHECK FUEL PRESSURE
Check fuel pressure. (Refer to EC-665, "
Fuel Pressure Check".)
OK or NG
OK >> GO TO 9.
NG (Fuel pressure is too high)>>Replace fuel pressure regulator, refer to EC-665, "
Fuel Pressure Check".
GO TO 8.
NG (Fuel pressure is too low)>>GO TO 7.
7.DETECT MALFUNCTIONING PART
1. Check the following.
- Clogged and bent fuel hose and fuel tube
- Clogged fuel filter
- Fuel pump and its circuit (Refer to EC-1155
.)
2. If NG, repair or replace the malfunctioning part. (Refer to EC-665, "
Fuel Pressure Check".)
If OK, replace fuel pressure regulator.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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EC-868
< SERVICE INFORMATION >[VK45DE]
DTC P0171, P0174 FUEL IN
JECTION SYSTEM FUNCTION
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK FUEL PRESSURE
1. Release fuel pressure to zero. Refer to EC-665, "
Fuel Pressure Check".
2. Install fuel pressure gauge and check fuel pressure. Refer to EC-665, "
Fuel Pressure Check".
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
 Fuel pump and circuit (Refer to EC-1155
.)
 Fuel pressure regulator (Refer to EC-665, "
Fuel Pressure Check".)
 Fuel lines (Refer to FL-3, "
Checking Fuel Line".)
 Fuel filter for clogging
>> Repair or replace.
6.CHECK MASS AIR FLOW SENSOR
With CONSULT-III
1. Install all removed parts.
2. Check “MASS AIR FLOW” in “DATA MONITOR” mode with CONSULT-III.
With GST
1. Install all removed parts.
2. Check mass air flow sensor signal in “Service $01” with GST.
OK or NG
OK (With CONSULT-III)>>GO TO 7.
OK (Without CONSULT-III)>>GO TO 8.
NG >> Check connectors for rusted terminals or loose connections in the mass air flow sensor circuit or
grounds. Refer to EC-768
.
7.CHECK FUNCTION OF FUEL INJECTOR-I
With CONSULT-III
1. Start engine.
2. Perform “POWER BALANCE” in “A CTIVE TEST” mode with CONSULT-III.
3. Make sure that each circuit produces a momentary engine speed drop.
OK or NG
OK >> GO TO 10.
NG >> Perform trouble diagnosis for EC-1149
.
8.CHECK FUNCTION OF FUEL INJECTOR-I
Without CONSULT-III
1. Turn ignition switch OFF.
2. Disconnect harness connectors F21, F 201 (Bank 1) and F41, F221 (Bank 2).
At idling: Approximately 350 kPa (3.57 kg/cm
2, 51 psi)
2.0 - 6.0 g·m/sec: at idling
7.0 - 20.0 g·m/sec: at 2,500 rpm
2.0 - 6.0 g·m/sec: at idling
7.0 - 20.0 g·m/sec: at 2,500 rpm
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EC-900
< SERVICE INFORMATION >[VK45DE]
DTC P0300 - P0308 MULTIPLE CYLINDER
MISFIRE, NO. 1 - 8 CYLINDER MIS-
FIRE
 Fuel lines (Refer to FL-3, "Checking Fuel Line".)
 Fuel filter for clogging
>> Repair or replace.
13.CHECK IGNITION TIMING
Check the following items. Refer to EC-658, "
Basic Inspection".
OK or NG
OK >> GO TO 14.
NG >> Follow the Basic Inspection.
14.CHECK AIR FUEL RATIO (A/F) SENSOR 1 INPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect air fuel ratio (A/F) sensor 1 harness connector.
3. Disconnect ECM harness connector.
4. Check harness continuity between the following terminals. Refer to Wiring Diagram.
5. Check harness continuity between the following terminals and ground. Refer to Wiring Diagram.
Items Specifications
Target idle speed 650 ± 50 rpm (in P or N position)
Ignition timing 12 ± 5 ° BTDC (in P or N position)
: Vehicle front 1. A/F sensor 1 (Bank 2)
harness connector2. A/F sensor 1 (Bank 1)
harness connector
A/F sensor 1 terminal ECM terminal
Bank 1 116
275
535
656
Bank 2 176
277
557
658
Continuity should exist.
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal 116176
PBIB3246E
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EM-1
ENGINE
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CONTENTS
ENGINE MECHANICAL
VQ35DE
SERVICE INFORMATION .. ..........................
4
PRECAUTIONS .............................................. .....4
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
4
Precaution for Drain Engine Coolant and Engine
Oil ..............................................................................
4
Precaution for Disconnecting Fuel Piping .................4
Precaution for Removal and Disassembly ................4
Precaution for Inspection, Repair and Replace-
ment ..........................................................................
4
Precaution for Assembly and Installation ..................5
Precaution for Angle Tightening ................................5
Precaution for Liquid Gasket .....................................5
PREPARATION ...................................................7
Special Service Tool ........................................... ......7
Commercial Service Tool ..........................................9
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ............................
12
NVH Troubleshooting - Engine Noise ................. ....12
Use the Chart Below to Help You Find the Cause
of the Symptom .......................................................
12
DRIVE BELTS ....................................................14
Checking Drive Belts ........................................... ....14
Tension Adjustment ................................................14
Removal and Installation .........................................15
AIR CLEANER AND AIR DUCT ........................17
Component .......................................................... ....17
Removal and Installation .........................................17
Changing Air Cleaner Filter .....................................18
INTAKE MANIFOLD COLLECTOR ...................19
Component .......................................................... ....19
Removal and Installation .........................................19
INTAKE MANIFOLD ...........................................24
Component .......................................................... ....24
Removal and Installation .........................................24
EXHAUST MANIFOLD AND THREE WAY
CATALYST ........................................................
26
Component ..............................................................26
Removal and Installation .........................................26
OIL PAN AND OIL STRAINER .........................30
Component (2WD Models) ......................................30
Removal and Installation (2WD Models) .................30
Component (AWD Models) ......................................35
Removal and Installation (AWD Models) .................36
IGNITION COIL .................................................42
Component ..............................................................42
Removal and Installation .........................................42
SPARK PLUG (PLATINUM-TIPPED TYPE) .....43
Component ..............................................................43
Removal and Installation .........................................43
FUEL INJECTOR AND FUEL TUBE ................45
Component ..............................................................45
Removal and Installation .........................................45
ROCKER COVER .............................................51
Component ..............................................................51
Removal and Installation .........................................51
FRONT TIMING CHAIN CASE .........................54
Removal and Installation .........................................54
TIMING CHAIN ..................................................64
Component .......................................................... ....64
Removal and Installation .........................................65
CAMSHAFT .......................................................83
Component ..............................................................83
Removal and Installation .........................................84
Valve Clearance ......................................................91
OIL SEAL ..........................................................97
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EM-2
Removal and Installation of Valve Oil Seal .............97
Removal and Installation of Front Oil Seal .............97
Removal and Installation of Rear Oil Seal ..............98
CYLINDER HEAD ............................................100
On-Vehicle Service .............................................. ..100
Component ............................................................101
Removal and Installation .......................................101
Disassembly and Assembly ...................................105
Inspection After Disassembly ................................107
ENGINE ASSEMBLY .......................................112
Component (2WD Models) .................................. ..112
Removal and Installation (2WD Models) ...............112
Component (AWD Models) ....................................117
Removal and Installation (AWD Models) ...............117
CYLINDER BLOCK .........................................122
Component .......................................................... ..122
Disassembly and Assembly ...................................123
How to Select Piston and Bearing .........................134
Inspection After Disassembly ................................138
SERVICE DATA AND SPECIFICATIONS
(SDS) ................................................................
149
Standard and Limit .............................................. ..149
VK45DE
SERVICE INFORMATION ..........................
160
PRECAUTIONS .............................................. .160
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ..
160
Precaution for Drain Engine Coolant and Engine
Oil ..........................................................................
160
Precaution for Disconnecting Fuel Piping ..............160
Precaution for Removal and Disassembly .............160
Precaution for Inspection, Repair and Replace-
ment .......................................................................
160
Precaution for Assembly and Installation ..............161
Parts Requiring Angle Tightening ..........................161
Precaution for Liquid Gasket .................................161
PREPARATION .............................................. .163
Special Service Tool ............................................ ..163
Commercial Service Tool ......................................164
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ..........................
167
NVH Troubleshooting - Engine Noise .................. ..167
Use the Chart Below to Help You Find the Cause
of the Symptom .....................................................
167
ENGINE ROOM COVER ..................................169
Component .......................................................... ..169
Removal and Installation .......................................169
DRIVE BELTS ..................................................170
Component .......................................................... ..170
Checking Drive Belts .............................................170
Tension Adjustment ...............................................170
Removal and Installation ...................................... .170
Component ...........................................................171
Drive Belt Auto Tensioner and Idler Pulley ...........172
AIR CLEANER AND AIR DUCT .......................173
Component .......................................................... .173
Removal and Installation .......................................173
Changing Air Cleaner Filter ...................................174
INTAKE MANIFOLD .........................................175
Component .......................................................... .175
Removal and Installation .......................................176
EXHAUST MANIFOLD AND THREE WAY
CATALYST .......................................................
179
Component .......................................................... .179
Removal and Installation .......................................179
OIL PAN AND OIL STRAINER ........................183
Component .......................................................... .183
Removal and Installation .......................................183
IGNITION COIL .................................................187
Component .......................................................... .187
Removal and Installation .......................................187
SPARK PLUG (PLATINUM-TIPPED TYPE) ....188
Component .......................................................... .188
Removal and Installation .......................................188
FUEL INJECTOR AND FUEL TUBE ................190
Component .......................................................... .190
Removal and Installation .......................................190
ROCKER COVER .............................................196
Component .......................................................... .196
Removal and Installation .......................................196
TIMING CHAIN .................................................199
Component .......................................................... .199
Removal and Installation .......................................200
CAMSHAFT ......................................................211
Component .......................................................... .211
Removal and Installation .......................................211
Valve Clearance ....................................................218
OIL SEAL ..........................................................222
Removal and Installation of Valve Oil Seal ...........222
Removal and Installation of Front Oil Seal ........... .222
Removal and Installation of Rear Oil Seal ............224
CYLINDER HEAD .............................................226
On-Vehicle Service .............................................. .226
Component ...........................................................227
Removal and Installation .......................................227
Disassembly and Assembly ..................................229
Inspection After Disassembly ................................232
ENGINE ASSEMBLY ..................................... ..237
Component .......................................................... .237
Removal and Installation .......................................237
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AIR CLEANER AND AIR DUCTEM-17
< SERVICE INFORMATION > [VQ35DE]
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AIR CLEANER AND AIR DUCT
ComponentINFOID:0000000001325707
Removal and InstallationINFOID:0000000001325708
REMOVAL
1. Remove engine cover with power tool. Refer to
EM-19, "Component".
 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 senso r 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.
 If anything found replace air hose.
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
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EM-18
< SERVICE INFORMATION >[VQ35DE]
AIR CLEANER AND AIR DUCT
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 FilterINFOID:0000000001325709
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 position 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
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OIL PAN AND OIL STRAINEREM-31
< SERVICE INFORMATION > [VQ35DE]
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 Do not spill engine oil on drive belts.
6. Drain engine coolant. Refer to CO-10, "
Changing Engine Coolant".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine coolant on drive belts.
7. Remove engine cover with power tool. Refer to EM-19, "
Component".
8. Remove air hose from air duct to mass air flow sens or side and electric throttle control actuator side.
Refer to EM-17, "
Component".
9. Removal engine rear lower slinger, and install engine rear slinger [SST: 10006 31U00 ( — )] to sling engine assembly for positioning. Refer to EM-7, "
Special Service Tool".
10. Remove front suspension member. Refer to FSU-16, "
Removal and Installation".
11. Remove drive belts. Refer to EM-15, "
Removal and Installation".
12. Remove alternator stay. Refer to SC-19, "
System Description".
13. Remove starter motor. Refer to SC-8, "
System Description".
14. Remove idler pulley and bracket assembly. Refer to EM-64, "
Component".
15. Disconnect oil cooler water hoses, and remove oil cooler water pipe mounting bolt. Refer to LU-12, "
Com-
ponent".
16. Disconnect A/T fluid cooler hoses, and remove A/T fluid cooler tube. Refer to AT-241, "
Removal and
Installation (2WD Models)".
17. Remove crankshaft position sensor (POS). CAUTION:
 Handle carefully to avoid dropping and shocks.
 Do not disassemble.
 Do not allow metal powder to adhere to magnetic part at sensor tip.
 Do not place sensors in a location wh ere they are exposed to magnetism.
18. Remove oil filter, as necessary. Refer to LU-8, "
Removal and Installation".
19. Remove oil cooler, as necessary. Refer to LU-12, "
Component".
20. Remove oil pan (lower) as follows:
a. Loosen mounting bolts in reverse order as shown in the figure to remove.
b. Insert the seal cutter (SST) between oil pan (upper) and oil pan (lower).
CAUTION:
 Be careful not to damage the mating surfaces.
 Do not insert a screwdriver, this will damage the mating
surfaces.
c. Slide the seal cutter by tapping on the side of tool with a ham- mer. Remove oil pan (lower).Slinger bolts:
: 28.0 N·m (2.9 kg-m, 21 ft-lb)
PBIC0782E
SEM960F
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EM-36
< SERVICE INFORMATION >[VQ35DE]
OIL PAN AND OIL STRAINER
Removal and Installation (AWD Models)
INFOID:0000000001325719
REMOVAL
CAUTION:
To avoid the danger of being scalded, never drain engine oil when the engine is hot.
NOTE:
To remove oil pan (lower) only, take step 5, then st ep 24. Removal of step 1, hood assembly (step 2) and step
4 are unnecessary.
1. Remove front tire.
2. Remove hood assembly. Refer to BL-13, "
Fitting Adjustment".
3. Remove front and rear engine undercover with power tool.
4. Remove front cross bar with power tool. Refer to FSU-5, "
On-Vehicle Inspection and Service".
5. Drain engine oil. Refer to LU-7, "
Changing Engine Oil".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine oil on drive belts.
6. Drain engine coolant. Refer to CO-10, "
Changing Engine Coolant".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine coolant on drive belts.
7. Remove engine cover with power tool. Refer to EM-19, "
Component".
8. Remove air hose from air duct to mass air flow s ensor side and electric throttle control actuator side.
Refer to EM-17, "
Component".
9. Remove drive belts. Refer to EM-15, "
Removal and Installation".
10. Remove front drive shaft (LH and RH) and side shaft. Refer to FAX-13, "
On-Vehicle Inspection".
11. Remove side shaft. Refer to FFD-14, "
Removal and Installation (VQ35DE Models)".
12. Removal engine rear lower slinger, and install engine rear slinger [SST: 10006 31U00 ( — )] to sling engine assembly for positioning. Refer to EM-7, "
Special Service Tool".
13. Remove front suspension member. Refer to FSU-16, "
Removal and Installation".
14. Remove engine mounting bracket, engine mounting bracket (lower) and insulator. Refer to EM-112,
"Component (2WD Models)".
15. Remove front propeller shaft. Refer to PR-4, "
On-Vehicle Inspection".
16. Remove oil filter and oil filter bracket. Refer to LU-10, "
Component".
17. Remove alternator stay. Refer to SC-19, "
System Description".
18. Remove idler pulley and bracket. Refer to EM-15, "
Removal and Installation".
19. Disconnect oil cooler water hoses, and remove oil cooler water pipe mounting bolt. Refer to LU-12, "
Com-
ponent".
20. Disconnect A/T fluid cooler hoses, and remove A/T fluid cooler tube. Refer to AT-241, "
Removal and
Installation (2WD Models)".
21. Remove front final drive assembly. Refer to FFD-14, "
Removal and Installation (VQ35DE Models)".
22. Remove starter motor. Refer to SC-8, "
System Description".
1. Oil pan gasket (rear) 2. Oil pan (upper) 3. O-ring
4. Oil pan gasket (front) 5. Oil filter 6. Connector bolt
7. Oil cooler 8. O-ring 9. Relief valve
10. Oil filter bracket 11. Oil filter bracket gasket 12. Oil strainer
13. Drain plug 14. Drain plug washer 15. Oil pan (lower)
16. Rear plate cover 17. Crankshaft position sensor (POS) 18 O-ring (small)
19. O-ring (large) 20. Axle pipe
Slinger bolts:
: 28.0 N·m (2.9 kg-m, 21 ft-lb)
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AIR CLEANER AND AIR DUCTEM-173
< SERVICE INFORMATION > [VK45DE]
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ComponentINFOID:0000000001325771
 Refer to
GI-8, "Component" for symbols in the figure.
Removal and InstallationINFOID:0000000001325772
REMOVAL
1. Remove engine cover with power tool. Refer to EM-169, "Component".
2. Disconnect harness connector from mass air flow sensor.
3. Disconnect vacuum hose and PCV hose.
4. Remove air duct (inlet), power duct, air cleaner case and mass air flow sensor assembly, air duct and res-
onator assembly disconnecting their joints.
 Add marks as necessary for easier installation.
5. Remove mass air flow sensor from air cleaner case. CAUTION:
Handle mass air flow sen sor with following cares.
 Do not shock it.
 Do not disassemble it.
 Do not touch its sensor.
1. Power duct 2. Blind plug 3. Clip
4. Air duct (inlet) 5. Air cleaner case 6. Mounting rubber
7. Resonator 8. Air cleaner filter 9. Air cleaner case
10. O-ring 11. Mass air flow sensor 12. Air duct and resonator assembly
13. Vacuum hose 14. PCV hose
A. To VIAS control solenoid valve B. To rocker cover (left bank)
PBIC4551E
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