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Mitsubishi 4G9 series

Mitsubishi 4G9 series
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GENERAL INFORMATION 11A-0-3
...........................................
1. SPECIFICATIONS 11A-1-1
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SERVICE SPECIFICATIONS 11A-1-1
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REWORK DIMENSIONS 11A-1-4
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TORQUE SPECIFICATIONS 11A-1-4
...................................
NEW TIGHTENING METHOD-BY USE OF BOLTS TO BE
TIGHTENED IN PLASTIC AREA 11A-1-7
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SEALANT 11A-1-7
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FORM-IN-PLACE GASKET 11A-1-8
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2. SPECIAL TOOLS 11A-2-1
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3. ALTERNATOR AND IGNITION SYSTEM 11A-3-1
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4. TIMING BELT 11A-4-1
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5. FUEL AND EMISSION CONTROL SYSTEM 11A-5-1
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5a.THROTTLE BODY AND EGR SYSTEM (GDI) 11A-5a-1
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6. INTAKE AND EXHAUST MANIFOLD 11A-6-1
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6a.INTAKE MANIFOLD (GDI) 11A-6a-1
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6b.EXHAUST MANIFOLD (GDI) 11A-6b-1
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6c.INJECTOR AND FUEL PUMP ASSEMBLY (GDI) 11A-6c-1
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7. WATER PUMP AND WATER HOSE 11A-7-1
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8. ROCKER ARMS AND CAMSHAFTS 11A-8-1
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8a.ROCKER COVER AND CAMSHAFTS (MIVEC) 11A-8a-1
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8b.ROCKER ARMS AND ROCKER SHAFT CAPS (MIVEC) 11A-8b-1
.....
9. CYLINDER HEAD AND VALVES 11A-9-1
.................................
10.FRONT CASE AND OIL PUMP 11A-10-1
.................................
11. PISTON AND CONNECTING ROD 11A-11-1
..............................
12.CRANKSHAFT, CYLINDER BLOCK, FLYWHEEL AND DRIVE
PLATE 11A-12-1
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11A-0-1
ENGINE
4G9 SERIES
CONTENTS
PWEE9502-E
E
Dec. 1998Mitsubishi Motors Corporation Revised

Table of Contents

Other manuals for Mitsubishi 4G9 series

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Mitsubishi 4G9 series Specifications

General IconGeneral
Fuel TypeGasoline
Engine FamilyMitsubishi Lancer
ValvetrainDOHC
Fuel SystemMulti-point fuel injection
Bore x Stroke81.0 mm x 89.0 mm (4G93), 86.5 mm x 86.0 mm (4G64)
ApplicationsMitsubishi Lancer, Proton Wira
Engine TypeInline-four engine

Summary

General Information

1. Specifications

Service Specifications

Detailed service specifications for various engine components and measurements.

Rework Dimensions

Specifications for rework dimensions of valve guides, seats, and crankshaft.

Torque Specifications

Torque values for engine and accessory components during installation.

New Tightening Method - By Use of Bolts to Be Tightened in Plastic Area

Details on a special tightening method for bolts used in plastic areas.

Sealant

Specifies sealants for various engine components and their application.

Form-In-Place Gasket

Guidelines and precautions for applying form-in-place gaskets (FIPG).

2. Special Tools

Special Tools List

Comprehensive list of special tools with numbers, names, and uses.

3. Alternator and Ignition System

Removal and Installation SOHC (Engines with distributor)

Step-by-step guide for removing and installing the alternator and ignition system.

Removal and Installation SOHC for other than PAJERO io (Engines without distributor)

Guide for removing and installing the alternator and ignition system for specific models.

Removal and Installation SOHC for PAJERO io (Engines without distributor)

Guide for removing and installing the alternator and ignition system for PAJERO io.

Removal and Installation DOHC

Procedure for removing and installing the alternator and ignition system on DOHC engines.

Removal and Installation DOHC-MIVEC

Guide for removing and installing the alternator and ignition system on DOHC-MIVEC engines.

Removal and Installation DOHC-GDI for CARISMA

Procedure for removing and installing the alternator and ignition system for DOHC-GDI CARISMA.

Removal and Installation DOHC-GDI for PAJERO io

Guide for removing and installing the alternator and ignition system for DOHC-GDI PAJERO io.

Crankshaft Bolt Removal

Procedure for removing the crankshaft bolt using a special tool.

Cam Position Sensor Support Installation

Installation of the cam position sensor support using FIPG.

Crankshaft Bolt Installation

Procedure for installing the crankshaft bolt using a special tool.

4. Timing Belt

Removal and Installation SOHC for other than PAJERO io

Steps for removing and installing the timing belt on SOHC engines.

Removal and Installation SOHC for PAJERO io

Guide for removing and installing the timing belt on SOHC PAJERO io models.

Removal and Installation DOHC

Procedure for removing and installing the timing belt on DOHC engines.

Removal and Installation DOHC-MIVEC

Steps for removing and installing the timing belt on DOHC-MIVEC engines.

Removal and Installation DOHC-GDI for CARISMA

Guide for removing and installing the timing belt on DOHC-GDI CARISMA.

Removal and Installation DOHC-GDI for PAJERO io

Procedure for removing and installing the timing belt on DOHC-GDI PAJERO io.

Timing Belt Removal

Instructions for marking the timing belt direction before removal.

Camshaft Sprocket Bolt Removal

Method for removing the camshaft sprocket bolt.

Camshaft Sprocket Bolt Installation

Procedure for installing the camshaft sprocket bolt.

Timing Belt Tensioner Installation

Proper installation of the timing belt tensioner.

Tensioner Spring Installation

Correct installation of the tensioner spring.

Timing Belt Installation

Detailed steps for installing the timing belt correctly.

Auto-Tensioner Installation

Procedure for installing the auto-tensioner.

Timing Belt Installation

Final steps for timing belt installation and alignment.

Inspection Timing Belt

Criteria for replacing the timing belt due to wear or damage.

Tensioner Puller, Idler Pulley

Checks for smooth rotation, play, and noise on pulleys.

Auto-Tensioner

Inspection of the auto-tensioner for leaks, wear, and rod projection.

5. Fuel and Emission Control System

Removal and Installation SOHC-CARBURETOR

Steps for removing and installing the fuel and emission control system components.

Removal and Installation SOHC-MPI for other than PAJERO iO

Guide for fuel and emission system service on specific SOHC-MPI models.

Removal and Installation SOHC-MPI for PAJERO io

Procedure for fuel and emission system service on SOHC-MPI PAJERO io.

Removal and Installation DOHC

Steps for removing and installing the fuel and emission control system on DOHC engines.

Injectors Installation

Specific instructions for installing fuel injectors with O-rings.

Fuel Pressure Regulator Installation

Procedure for installing the fuel pressure regulator correctly.

Gasket Installation

Guidelines for installing gaskets in the fuel system.

5 a. Throttle Body and EGR System (GDI)

Removal and Installation For CARISMA

Steps for removing and installing the throttle body and EGR system.

Removal and Installation For PAJERO io

Guide for servicing the throttle body and EGR system for PAJERO io.

Throttle Body Gasket

Procedure for installing the throttle body gasket.

Intake Manifold Stay Installation

Correct installation of the intake manifold stay.

6. Intake and Exhaust Manifold

Removal and Installation SOHC-CARBURETOR

Steps for removing and installing intake and exhaust manifolds.

Removal and Installation SOHC-MPI

Guide for servicing intake and exhaust manifolds on SOHC-MPI engines.

Removal and Installation DOHC

Procedure for removing and installing intake and exhaust manifolds on DOHC engines.

Exhaust Manifold Installation

Installation of exhaust manifold brackets and manifold.

Intake Manifold Stay Installation

Correct installation of the intake manifold stay.

6 a. Intake Manifold (GDI)

Removal and Installation For CARISMA, SPACE STAR

Steps for removing and installing the GDI intake manifold.

Removal and Installation For SPACE RUNNER

Guide for servicing the GDI intake manifold on SPACE RUNNER.

Removal and Installation For PAJERO io

Procedure for servicing the GDI intake manifold on PAJERO io.

Intake Manifold Stay Installation

Correct installation of the intake manifold stay for GDI.

6 b. Exhaust Manifold (GDI)

Removal and Installation For CARISMA

Steps for removing and installing the GDI exhaust manifold.

Removal and Installation For PAJERO io

Guide for servicing the GDI exhaust manifold on PAJERO io.

Exhaust Manifold Bracket Installation

Correct installation of exhaust manifold brackets.

6 c. Injector and Fuel Pump Assembly (GDI)

Removal and Installation For CARISMA

Steps for removing and installing GDI injectors and fuel pump.

Removal and Installation For PAJERO io

Guide for servicing GDI injectors and fuel pump on PAJERO io.

Backup Ring O-Ring Corrugated Washer Installation

Correct installation of backup rings, O-rings, and washers for injectors.

Delivery Pipe and Injector Assembly Installation

Procedure for assembling the delivery pipe and injector assembly.

Pump Camshaft Case Installation

Correct installation of the pump camshaft case.

Fuel Pressure Sensor Installation

Procedure for installing the fuel pressure sensor.

Fuel High Pressure Regulator Installation

Installation of the fuel high pressure regulator.

Fuel Pump Fuel Feed Pipe Installation

Steps for installing the fuel pump and feed pipe.

7. Water Pump and Water Hose

Removal and Installation SOHC

Steps for removing and installing the water pump and hoses.

Removal and Installation DOHC

Guide for servicing the water pump and hoses on DOHC engines.

Removal and Installation DOHC-GDI for PAJERO io

Procedure for servicing the water pump and hoses for DOHC-GDI PAJERO io.

Water Pump Installation

Procedure for installing the water pump using FIPG.

Water Inlet Pipe Water Pipe O-Ring Installation

Installation instructions for water inlet pipe, water pipe, and O-rings.

Thermostat Case Installation

Installation of the thermostat case using FIPG.

Thermostat Installation

Correct installation of the thermostat with attention to jiggle valve.

Water Outlet Fitting Installation

Installation of the water outlet fitting using FIPG.

Engine Coolant Temperature Gauge Unit Installation

Installation of the engine coolant temperature gauge unit.

Engine Coolant Temperature Sensor Installation

Procedure for installing the engine coolant temperature sensor.

Water By-Pass Fitting Installation

Installation of the water by-pass fitting using FIPG.

Water Fitting Installation

Installation of the water fitting using FIPG.

8. Rocker Arms and Camshafts

Removal and Installation SOHC

Steps for removing and installing rocker arms and camshafts.

Removal and Installation DOHC

Guide for servicing rocker arms and camshafts on DOHC engines.

Removal and Installation DOHC-GDI

Procedure for servicing rocker arms and camshafts on DOHC-GDI engines.

Removal and Installation DOHC-GDI for CARISMA

Steps for servicing rocker arms and camshafts for DOHC-GDI CARISMA.

Removal and Installation DOHC-GDI for PAJERO io

Guide for servicing rocker arms and camshafts for DOHC-GDI PAJERO io.

Lash Adjuster Removal

Procedure for removing the lash adjuster.

Adjusting Screw Installation

Correct installation of the adjusting screw in the rocker arm.

Rocker Arm Shaft Installation

Procedure for installing the rocker arm shaft.

Rocker Arms and Rocker Arm Shaft Installation

Steps for installing rocker arms and shafts.

Rocker Arm Spring Installation

Correct installation of the rocker arm spring.

Oil Seal Installation

Procedure for installing the oil seal.

Lash Adjuster Installation

Detailed procedure for cleaning and preparing lash adjusters.

Camshaft Installation

Correct procedure for installing the camshafts.

Bearing Cap Installation

Correct installation of camshaft bearing caps.

Beam Camshaft Cap Installation

Procedure for installing beam camshaft caps.

Inspection Camshaft

Measurement of camshaft lobe height.

Lash Adjuster

Instructions for cleaning and maintaining lash adjusters.

8 a. Rocker Cover and Camshafts (MIVEC)

Removal and Installation

Steps for removing and installing rocker cover and camshafts on MIVEC.

Inspection Oil Control Valve

Checking the operation of the oil control valve.

Inspection Camshaft

Measuring camshaft lobe heights for MIVEC engines.

Semi-Circular Packing Installation

Installation of semi-circular packing using sealant.

Camshaft Holder Assembly Installation

Installation of the camshaft holder assembly.

Camshaft Installation

Procedure for installing MIVEC camshafts correctly.

Camshaft Bearing Cap Camshaft Holder Installation

Installation of camshaft bearing caps and holders.

Oil Control Valve Installation

Installation of the oil control valve with sealant.

Oil Seal Installation

Procedure for installing the oil seal.

Rocker Cover Installation

Correct installation of the rocker cover on MIVEC engines.

Valve Clearance Adjustment

Procedure for adjusting valve clearance on MIVEC engines.

Rocker Arm Piston Inspection

Inspection of the rocker arm piston.

8 b. Rocker Arms and Rocker Shaft Caps (MIVEC)

Removal and Installation

Steps for removing and installing rocker arms and shaft caps.

Rocker Arm Assembly Installation

Correct installation of rocker arm assemblies.

9. Cylinder Head and Valves

Removal and Installation SOHC

Steps for removing and installing the cylinder head and valves.

Removal and Installation DOHC

Guide for servicing cylinder head and valves on DOHC engines.

Removal and Installation DOHC-MIVEC

Procedure for servicing cylinder head and valves on DOHC-MIVEC engines.

Removal and Installation DOHC-GDI

Steps for servicing cylinder head and valves on DOHC-GDI engines.

Cylinder Head Bolt Removal

Procedure for removing cylinder head bolts.

Retainer Lock Removal

Procedure for removing retainer locks and storing parts.

Valve Stem Seal Removal

Method for removing valve stem seals.

Valve Handling Precautions

Important safety precautions for handling sodium-filled exhaust valves.

Valve Stem Seal Installation

Correct installation of valve stem seals.

Valve Spring Installation

Procedure for installing valve springs correctly.

Retainer Lock Installation

Correct installation of retainer locks to prevent damage.

Cylinder Head Bolt Installation

Procedure for installing cylinder head bolts with correct torque sequence.

Sealant Application to Oil Pressure Switch

Applying sealant to the oil pressure switch threads.

Inspection Cylinder Head

Checking cylinder head flatness and height.

Inspection Valve

Checking valve face contact, margin, and overall height.

Inspection Valve Spring

Measuring valve spring free height and squareness.

Inspection Valve Seat

Measuring valve stem projection relative to valve seat.

Inspection Valve Guide

Measuring valve guide to valve stem clearance.

Valve Seat Reconditioning Procedure

Steps for reconditioning valve seats.

Valve Seat Replacement Procedure

Procedure for replacing valve seats.

Valve Guide Replacement

Method for replacing valve guides.

10. Front Case and Oil Pump

Removal and Installation SOHC

Steps for removing and installing front case and oil pump.

Removal and Installation DOHC

Guide for servicing front case and oil pump on DOHC engines.

Removal and Installation DOHC-GDI for PAJERO io

Procedure for servicing front case and oil pump for DOHC-GDI PAJERO io.

Oil Pan Removal

Procedure for removing the oil pan using a special tool.

Removal of Upper Oil Pan

Instructions for removing the upper oil pan.

Outer RotorInner Rotor Removal

Method for removing oil pump rotors with alignment marks.

Inner RotorOuter Rotor Installation

Correct installation of oil pump rotors with alignment.

Sealant Application to Oil Pump Case

Applying sealant to the oil pump case.

Crankshaft Front Oil Seal Installation

Procedure for installing the crankshaft front oil seal.

Oil PanUpper Oil PanLower Oil Pan Installation

Steps for installing oil pans using FIPG.

Oil Filter Installation

Correct procedure for installing the oil filter.

Sealant Application to Oil Pressure Switch

Applying sealant to the oil pressure switch.

Inspection Oil Pump

Checking the tip clearance of the oil pump.

11. Piston and Connecting Rod

Removal and Installation

Steps for removing and installing pistons and connecting rods.

Connecting Rod Cap Removal

Procedure for removing connecting rod caps.

Piston Pin Removal

Method for removing the piston pin using special tools.

Piston Pin Installation

Correct procedure for installing the piston pin.

Oil Ring Installation

Proper installation of the oil ring and side rails.

Piston Ring No.2 Piston Ring No.1 Installation

Correct installation of piston rings.

Piston and Connecting Rod Installation

Steps for installing pistons and connecting rods into the cylinder.

Connecting Rod Bearing Installation

Correct installation of connecting rod bearings.

Connecting Rod Cap Installation

Correct installation of connecting rod caps.

Connecting Rod Cap Nut Installation

Procedure for tightening connecting rod cap nuts.

Inspection Piston Ring

Checking piston ring and end gap clearances.

Crankshaft Pin Oil Clearance (Plastigage Method)

Using Plastigage to measure crankshaft pin oil clearance.

12. Crankshaft, Cylinder Block, Flywheel and Drive Plate

Removal and Installation

Steps for removing and installing crankshaft, block, flywheel, drive plate.

Removal and Installation DOHC-GDI for PAJERO io

Guide for servicing these components on DOHC-GDI PAJERO io.

Oil Jet Removal

Procedure for removing oil jets.

Oil Jet Installation

Correct installation of oil jets.

Crankshaft Bearing Installation

Correct installation of crankshaft bearings.

Bearing CapBearing Cap Bolt Installation

Procedure for installing bearing caps and bolts.

Oil Seal Installation

Correct installation of oil seals.

Sealant Application to Oil Seal Case

Applying sealant to the oil seal case.

Drive Plate BoltFlywheel Bolt Installation

Correct installation of drive plate and flywheel bolts.

Inspection Crankshaft Journal Oil Clearance

Using Plastigage to measure crankshaft journal oil clearance.

Inspection Cylinder Block

Checking cylinder block flatness and height.

Boring Cylinder

Procedures for boring cylinders to oversize.

Hydro-Flywheel DOHC-GDI for PAJERO io

Inspection of the hydro-flywheel for serviceability.

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