Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti G37 2008 Coupe Approved Infiniti G37 Coupe 2008 em
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ENGINE
A
SECTION
ENGINE MECHANICAL
EM EM
C
D
E
CONTENTS
SYMPTOM DIAGNOSIS .............................. 3
. Exploded View ........................................................15
. F
Removal and Installation ........................................15 .
NOISE, VIBRATION AND HARSHNESS Inspection ...............................................................16
.
(NVH) TROUBLESHOOTING ............................ 3
. G
NVH Troubleshooting - Engine Noise ................... 3 . CAMSHAFT VALVE CLEARANCE .................. 17
Use the Chart Below to Help You Find the C Inspection and Adjustment .....................................17
.
ause of the Symptom ............................................. 3
.
COMPRESSION PRESSURE ........................... 22 H
PRECAUTION .............................................. 5
. Inspection ...............................................................22
.
PRECAUTIONS .................................................. 5
. ON-VEHICLE REPAIR ................................ 24
.
I
Precaution for Procedure without Cowl Top Cover 5 ......
ENGINE COVER ............................................... 24
Precaution Necessary for Steering Wheel Rota-
Exploded View ........................................................24
.
tion after Battery Disconnect .................................... 5
.
Removal and Installation ........................................24
. J
Draining Engine Coolant ......................................... 5
.
Disconnecting Fuel Piping ...................................... 5. DRIVE BELT AUTO TENSIONER AND IDLER
Removal and Disassembly ..................................... 5 . PULLEY ............................................................. 25
Inspection, Repair and Replacement ..................... 6 . K
Exploded View ........................................................25
.
Assembly and Installation ....................................... 6
. Removal and Installation ........................................25
.
Parts Requiring Angle Tightening .......................... 6 .
Liquid Gasket .......................................................... 6
. AIR CLEANER AND AIR DUCT ....................... 26 L
Definitions of Bank Names ....................................... 7
. Exploded View ........................................................26
.
Removal and Installation ........................................26 .
PREPARATION ........................................... 8
. Inspection ...............................................................27
. M
PREPARATION .................................................. 8
. INTAKE MANIFOLD COLLECTOR .................. 28
Special Service Tools ............................................. 8
. Exploded View ........................................................28
.
Commercial Service Tools ...................................... 9
. Removal and Installation ........................................28
. N
ON-VEHICLE MAINTENANCE ................... 12
. INTAKE MANIFOLD ......................................... 31
Exploded View ........................................................31
.
DRIVE BELTS ...................................................12
. Removal and Installation ........................................31 .
O
Exploded View ....................................................... 12
.
Inspection ...............................................................32
.
Checking ................................................................ 12
.
Tension Adjustment ............................................... 12 . EXHAUST MANIFOLD ...................................... 33 P
Removal and Installation ........................................ 12 . Exploded View ........................................................33
.
Inspection ............................................................... 13
. Removal and Installation ........................................33 .
Inspection ...............................................................35
.
AIR CLEANER FILTER .....................................14
.
Removal and Installation ........................................ 14
. FUEL INJECTOR AND FUEL TUBE ................ 36
Exploded View ........................................................36
.
SPARK PLUG ...................................................15
. Removal and Installation ........................................36
.
Revision: 2007 June EM-1 G37 Coupe
Inspection .............................................................. 41
. Exploded View ....................................................... 75
.
Disassembly and Assembly ................................... 75 .
OIL PAN (LOWER) ........................................... 42
. Inspection ............................................................... 77
.
Exploded View ....................................................... 42
.
Removal and Installation ....................................... 42 . REAR TIMING CHAIN CASE ........................... 78
.
Inspection .............................................................. 44
. Exploded View ....................................................... 78
.
Disassembly and Assembly ................................... 79 .
IGNITION COIL, SPARK PLUG AND ROCK-
ER COVER ........................................................ 45
. CAMSHAFT ...................................................... 83
.
Exploded View ....................................................... 45
. Exploded View ....................................................... 83
.
Removal and Installation ....................................... 45
. Disassembly and Assembly ................................... 84 .
Inspection ............................................................... 93
.
TIMING CHAIN ................................................. 48
.
Exploded View ....................................................... 48
. CYLINDER HEAD ............................................ 100
.
Removal and Installation ....................................... 49 . Exploded View ..................................................... 100.
Inspection .............................................................. 62
. Disassembly and Assembly ................................. 101 .
Inspection ............................................................. 106
.
OIL SEAL .......................................................... 64
.
CYLINDER BLOCK ......................................... 110
.
VALVE OIL SEAL (EXH) ......................................... 64 . Exploded View ..................................................... 110.
VALVE OIL SEAL (EXH) : Removal and Installa- Disassembly and Assembly ................................. 111 .
tion ......................................................................... 64
. Inspection ............................................................. 120
.
FRONT OIL SEAL .................................................... 64
. HOW TO SELECT PISTON AND BEARING .. 131
FRONT OIL SEAL : Removal and Installation ....... 65 . Description ........................................................... 131
.
REAR OIL SEAL ...................................................... 65
. Piston ................................................................... 131
.
REAR OIL SEAL : Removal and Installation ......... 65 . Connecting Rod Bearing .................................... 132 .
Main Bearing ....................................................... 135 .
REMOVAL AND INSTALLATION .............. 67
.
SERVICE DATA AND SPECIFICATIONS
ENGINE ASSEMBLY ........................................ 67
. (SDS) ......................................................... 138
Exploded View ....................................................... 67
.
Removal and Installation ....................................... 67 . SERVICE DATA AND SPECIFICATIONS
Inspection .............................................................. 70
. (SDS) ............................................................... 138
.
General Specification .......................................... 138 .
DISASSEMBLY AND ASSEMBLY ............ 72
. Drive Belt ............................................................. 138
.
Spark Plug ........................................................... 138
.
ENGINE STAND SETTING ............................... 72
. Intake Manifold ..................................................... 139
.
Setting ................................................................... 72
. Exhaust Manifold ................................................. 139 .
ENGINE UNIT ................................................... 74
. Camshaft .............................................................. 139
.
Disassembly .......................................................... 74
. Cylinder Head ..................................................... 141.
Cylinder Block ..................................................... 143
.
Assembly ............................................................... 74
.
Main Bearing ....................................................... 147
.
OIL PAN (UPPER) AND OIL STRAINER ......... 75
. Connecting Rod Bearing .................................... 148 .
Revision: 2007 June EM-2 G37 Coupe
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
< SYMPTOM DIAGNOSIS >
SYMPTOM DIAGNOSIS A
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting - Engine Noise INFOID:0000000001547631
EM
C
D
E
F
G
H
I
J
K
L
M
N
O
P
JPBIA1048GB
Use the Chart Below to Help You Find the Cause of the Symptom INFOID:0000000001547632
1. Locate the area where noise occurs.
Revision: 2007 June EM-3 G37 Coupe
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
< SYMPTOM DIAGNOSIS >
2. Confirm the type of noise.
3. Specify the operating condition of the engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
Operating condition of engine
Location Type of Before After When Source of Refer-
When When While Check item
of noise noise warm- warm- start- noise ence page
idling racing driving
up up ing
Top of en- Ticking or Tappet
C A -- A B -- Valve clearance EM-17
gine clicking noise
Rocker
cover Camshaft Camshaft runout EM-139
Cylinder Rattle C A -- A B C bearing Camshaft journal oil EM-139
head noise clearance
Piston to piston pin oil
EM-143
Slap or Piston pin clearance
-- A -- B B --
knock noise Connecting rod bushing
EM-148
oil clearance
Piston to cylinder bore EM-143
Crank- clearance
shaft pul- Piston ring side clear- EM-143
Slap or Piston
ley A -- -- B B A ance
rap slap noise
Cylinder Piston ring end gap EM-143
block Connecting rod bend EM-148
(Side of and torsion
engine) Connect- Connecting rod bushing EM-148
Oil pan ing rod oil clearance
Knock A B C B B B
bearing Connecting rod bearing EM-148
noise oil clearance
Main bearing oil clear- EM-147
Main bear-
Knock A B -- A B C ance
ing noise
Crankshaft runout EM-143
Timing
Front of chain and Timing chain cracks EM-62
engine Tapping or timing and wear
A A -- B B B
Timing ticking chain ten- Timing chain tensioner EM-49
chain case sioner operation
noise
Drive belts
Squeak-
(Sticking
ing or fizz- A B -- B -- C Drive belts deflection
or slip-
ing EM-12
ping)
Front of
Drive belts Idler pulley bearing op-
engine Creaking A B A B A B
(Slipping) eration
Water CO-19,
Squall
A B -- B A B pump Water pump operation "Exploded
Creak
noise View"
A: Closely related B: Related C: Sometimes related --: Not related
Revision: 2007 June EM-4 G37 Coupe
PRECAUTIONS
< PRECAUTION >
PRECAUTION A
PRECAUTIONS
Precaution for Procedure without Cowl Top Cover INFOID:0000000001910568
EM
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
C
D
E
PIIB3706J
Precaution Necessary for Steering Wheel Rotation after Battery Disconnect F
INFOID:0000000001910569
NOTE:
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