2005 MITSUBISHI LANCER EVOLUTION IX oil

Service Manual
4G6
FOREWORD
This manual contains information about the 4G6
DOHC engine. It only covers those points that are
different from the service manuals listed below.
Therefore, this manual should be used in conjunction
with the following manuals.
• 4G6 DOHC engine Service Manual (No. 1039G46)
• 4G6 DOHC engine Service Manual Supplement
(No.1039G63)
This manual is based on the engine specifications as of
March 2005. Please note that some engine details may
not match those given in this manual due to
subsequent changes in engine specifications. The units
shown in this manual are the standard international
SI units.
(However, conventional units are used for some figures
taken from existing documents)
If you have any opinions, requests or queries regarding
this manual, please write them down on the “Servicing
Comment Form” on the last page, and fax them to us.
March 2005
Mitsubishi Motor Corporation
This manual is printed on recycled paper.
CONTENTS
General Information . . . . . . . . . . . . . . . 4
Servicing Specification Values . . . . . . 4
Tightening torques . . . . . . . . . . . . . . . . 5
Sealants . . . . . . . . . . . . . . . . . . . . . . . . . 7
Alternator / Ignition system . . . . . . . . . 8
Timing belt . . . . . . . . . . . . . . . . . . . . . 10
Fuel system . . . . . . . . . . . . . . . . . . . . . 13
Secondary air system /
inlet manifold . . . . . . . . . . . . . . . . . . . 15
Exhaust manifold . . . . . . . . . . . . . . . . 16
Water pump / Water hose . . . . . . . . . 17
Rocker arm / Cam shaft . . . . . . . . . . . 18
Oil pump / Sump . . . . . . . . . . . . . . . . . 21
Pistons / Connecting rods . . . . . . . . . 22
Crank shaft / Cylinder block . . . . . . . 25
Turbocharger. . . . . . . . . . . . . . . . . . . . 27
DOHC
ENGINE

2HOW TO USE THIS MANUAL
How to Use this Manual
Range of description
This manual explains the service procedure for the engine after it has been removed from the vehicle. For information on
removing the engine from the vehicle, or "on-vehicle" servicing of the engine, please refer to the separate service manual for
the relevant vehicle model.
Understanding the description
Inspection
The manual only indicates inspection points where special tools or measuring devices are required. It does not mention general
visual checks, part cleaning requirements, and so on, but these must also be carried out as part of the actual service work.
Service sequence
(1) A component diagram is provided at the beginning of each section in order to give the reader a clear
understanding of where the various parts are installed.
(2) The numbers in the component diagram indicate the sequence of the service procedure. Tightening torques
are shown and non-reusable parts are indicated where appropriate
Removal sequence:The part numbers correspond to the numbers in the component diagram and indicate
the removal sequence.
Installation sequence:This is only shown if the parts cannot be installed in the reverse order to the removal
sequence.
Disassembly sequence: The numbers of the part names correspond to the symbols in the component
diagram and indicate the disassembly sequence.
Assembly sequence:This is only shown if the parts cannot be re-assembled in the reverse order to the
disassembly sequence.
Symbols for lubricants and sealants
Application points for lubricants and sealants are
indicated by special symbols (shown right) on the
component parts diagram or on the following page............... Grease
.............. Sealant or liquid gasket (FIPG)
.............. Brake fluid
.............. Engine oil
Types of service points
“Service point” notes are used to give a detailed
description of essential maintenance and service
points, standard values, procedures for using special
tools, and other important information at relevant
points in the service sequence. The different types
of “service point” are shown on the right-hand side.: Indicates that there is a removal or
disassembly service point
: Indicates that there is an installation or
assembly service point
: Indicates that the removal or disassembly
service point is described in the ’01-14G6
DOHC Engine Service Manual.
: Indicates that the installation or assembly
service point is described in the ’01-14G6
DOHC Engine Service Manual.
: Indicates that the removal or disassembly
service point is described in the ’03-14G6
DOHC Engine Service Manual.
: Indicates that the installation or assembly
service point is described in the ’03-14G6
DOHC Engine Service Manual.

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44G6 – GENERAL INFORMATION/ SERVICING SPECIFICATIONS
General Information
The 4G63 MIVEC T/C engine fitted in the Lancer Evolution IX incorporates the following changes with respect to the previous
4G63 T/C engine.
• Adoption of variable valve timing control system
• Modification to clearance gap in piston No.2 ring coupling
• Addition of air intake temperature sensor
• Addition of boost sensor
Vehicle Model List
Specifications
Servicing Specification Values
Name Vehicle model Engine type Exhaust capacity cc Specifications
Lancer Evolution IX CT9A 4G63-7 1,997 DOHC 16-valve
MIVEC – T/C
Item Specification
Bore x stroke 85 x 88
Total displacement cc 1,997
Combustion chamber shape Pentroof type
No. of cylinders 4
Valve mechanism Type DOHC
Intake valves 8
Exhaust valves 8
Lash adjuster Hydraulic
Rocker arm Roller follower type
Compression ratio 8.8
Fuel injection device Electronically controlled MPI
Ignition device Electronically controlled two-coil type
Alternator AC type (with IC regulator)
Starter motor Deceleration drive
g
Item Standard value Limit value
Cylinder head, valves
Valve spring : free height mm 50.4 49.4
Valve spring : perpendicularity 2º or less 4º
Pistons, connecting rods
No.1 0.03~0.07 0.1Piston rings : Clearance between ring and ring
groove mm
No.2 0.02~0.06 0.1
No.1 0.20~0.30 0.8Piston rings : Closed gap mm
No.2 0.30~0.45 0.8
Oil ring 0.10~0.40 1.0

54G6 – TIGHTENING TORQUES
Tightening Torques
Par tTightening Torque Nm
Alternator, ignition system
Oil level gauge guide bolt13 ± 1
Water pump pulley bolt8.8 ± 1.0
Auto tension bolt (washer)44 ± 10
Auto tension bolt (flange)24 ± 4
Alternator bracket bolt (flange)24 ± 4
Alternator bracket bolt (washer M8 x 22)22 ± 4
Alternator bracket bolt (washer M8 x 32)20 ± 2
Alternator nut44 ± 10
Crankshaft pulley bolt25 ± 4
Centre cover holt3.0 ± 0.5
Ignition coil bolt10 ± 2
Spark plug25 ± 5
Timing belt
Timing belt cover bolt (flange)11 ± 1
Timing belt cover bolt (washer)9.0 ± 1.0
Power steering pump bracket bolt49 ± 9
Connector bracket bolt11 ± 1
Locker cover bolt3.5 ± 0.5
Plug cap32 ± 2
Tensioner pulley bolt48 ± 5
Tensioner arm bolt21 ± 4
Auto tensioner bolt23 ± 3
Idler pulley bolt35 ± 6
Crank angle sensor bolt8.8 ± 1.0
Oil pump sprocket nut54 ± 5
Crankshaft holt167
Tensioner B bolt19 ± 3
Counterbalance shaft sprocket bolt45 ± 3
Engine support bracket bolt49 ± 5
V.V.T. sprocket bolt65 ± 5
Camshaft sprocket bolt88 ± 10
Fuel system
Throttle body bolt19 ± 3
Cover bolt12 ± 1
Fuel pressure regulator bolt8.8 ± 2.0
Delivery pipe and injector bolt11 ± 1
Vacuum hose and pipe bolt11 ± 1
Solenoid valve assembly bolt9.0 ± 1.0
Vacuum tank bracket bolt9.0 ± 1.0
Secondary air system / Intake manifold
Exhaust manifold heat protector bolt20 ± 3
Air pipe assembly

64G6 – TIGHTENING TORQUE
PartTightening Torque
Air pipe assembly bolt (eye bolt) 49 ± 5
Air pipe assembly bolt (M6 flange) 11 ± 1
Air pipe assembly bolt (M8 flange) 24 ± 3
Air pipe assembly bolt (M8 washer) 14 ± 1
Air control valve assembly bolt 22 ± 4
Engine hanger bolt 19 ± 3
Intake air temperature sensor 14 ± 1
Boost sensor bolt 5.0 ± 1.0
Intake manifold stay bolt 31 ± 3
Intake manifold bolt (M8) 20 ± 2
Intake manifold bolt nut (M10) 36 ± 6
Exhaust manifold
Engine hanger bolt 22 ± 3
Turbocharger heat protector bolt 23 ± 3
Oxygen sensor 44 ± 5
Exhaust fitting bracket bolt 35 ± 6
Exhaust filling bolt nut 59 ± 5
Air outlet fitting bolt 19 ± 1
Oil return pipe bolt (flange) 14 ± 1
Oil return pipe bolt (washer) 9.0 ± 1.0
Turbocharger assembly and pipe assembly bolt, nut 64 ± 5
Oil pipe bolt (M10 eye bolt) 17 ± 2
Oil pipe bolt (M12 eye bolt) 31 ± 2
Oil pipe bolt (M12 flange) 11 ± 1
Water pipe bolt (flange) 10 ± 1
Water pipe bolt (eye bolt) 42 ± 7
Exhaust manifold nut (M8) 33 ± 6
Exhaust manifold nut (M10) 55 ± 10
Water pump / Water hose
Coolant temperature sensor 29 ± 10
Coolant temperature gauge unit 11 ± 1
Water outlet fitting bolt 10 ± 1
Thermostat housing bolt 23 ± 4
Water inlet pipe bolt (M6) 10 ± 1
Water inlet pipe bolt (M8) 13 ± 2
Water pump bolt 14 ± 1
Knock sensor 23 ± 2
Rocker arm / Camshaft
Cam position sensor bolt 11 ± 1
Cover bolt 10 ± 2
Cam position sensing cylinder bolt 22 ± 4
Cam position sensor support bolt 14 ± 1
Bearing cap bolt 20 ± 1
Oil delivery body bolt 11 ± 1

74G6 - TIGHTENING TORQUES
Par tTightening Torque
Oil control pump11 ± 1
Check valve30 ± 3
Eye bolt42 ± 2
Oil pipe11 ± 1
Oil pipe joint30 ± 3
Oil pump / Sump
Drain plug39 ± 5
Sump bolt9.0 ± 3.0
Oil screen bolt19 ± 3
Baffle plate bolt22 ± 4
Oil pressure switch10 ± 2
Oil cooler bypass valve54 ± 5
Relief plug44 ± 5
Oil filter bracket bolt19 ± 3
Plug cap23 ± 3
Flange bolt36 ± 3
Front case bolt23 ± 3
Oil pump cover bolt17 ± 2
Oil pump cover screw10 ± 2
Piston / Connecting rod
Connecting rod cap nut20 ± 2 _ +90° ~94°
Crankshaft / Cylinder block
Flywheel bolt132 ± 5
Rear plate bolt11 ± 1
Bell housing cover bolt (flange)10 ± 2
Bell housing cover bolt (washer)9.0 ± 1.0
Rear oil seal case bolt11 ± 1
Beam bearing cap bolt25 ± 2 _ +90° ~ 100°
Check valve32 ± 2
Turbocharger
Waste gate actuator bolt12 ± 1
Sealants
Par tSpecified Sealant
Cam position sensor support *MZ100191 or equivalent
Note : * indicates point where liquid gasket (FIPG) used

84G6 – ALTERNATOR / IGNITION SYSTEM
Alternator / Ignition System
Removal and Installation
Note :
The ignition coil boot must only be removed from the ignition coil when it is to be replaced.
If removed, always replace with a new part.
Removal sequence
1. Oil level gauge
2. O-ring
3. Oil level gauge guide
4. O-ring
5. Water pump pulley
6. Auto tensioner assembly
7. Alternator bracket8. Alternator
9. Crankshaft pulley
10. Centre cover
11. Spark plug cable
12. Ignition coil
13. Ignition coil boot
14. Spark plug
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94G6 – ALTERNATOR, IGNITION SYSTEM
Removal Service Point
Removal of ignition coil boot
Note :
• If the ignition coil boot is not installed according to the
specifications, then this can lead to various problems, such
as malfunction of the ignition coil, damage to the ignition coil,
leaking of high voltage to external parts, infiltration of water
into the hole, etc.
• The spark plug coupling section of the ignition coil boot is
coated with a white powder. This coating helps to prevent the
boot from welding to the spark plug, and must not be touched
or wiped away.
1. Please check that a spring is fitted inside the new ignition coil
boot.
2. Press the new ignition coil boot firmly onto the ignition coil,
and turn the coupling section 2 or 3 times to seat it correctly
in position, ensuring that there are no gaps.
3. After installation, turn the boot until the air blow hole is
positioned as shown in the diagram.
Coupling
section
Air blow hole
White powder coating on
interior part. Do not touchAir blow hole
Upper faceA

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