Mitsubishi Colt Ralliart. Instruction - page 1

GROUP 11A

ENGINE

MECHANICAL

<4A9>

CONTENTS

GENERAL INFORMATION . . . . . . . .

11A-2

SERVICE SPECIFICATIONS. . . . . . .

11A-3

SEALANTS . . . . . . . . . . . . . . . . . . . .

11A-3

SPECIAL TOOLS. . . . . . . . . . . . . . . .

11A-4

ON-VEHICLE SERVICE. . . . . . . . . . .

11A-6

DRIVE BELT TENSION CHECK AND

ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . .

11A-6

IGNITION TIMING CHECK . . . . . . . . . . . . .

11A-9

IDLE SPEED CHECK . . . . . . . . . . . . . . . . .

11A-9

IDLE MIXTURE CHECK . . . . . . . . . . . . . . .

11A-10

VALVE CLEARANCE CHECK AND

ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . .

11A-10

COMPRESSION PRESSURE CHECK. . . .

11A-12

MANIFOLD VACUUM CHECK . . . . . . . . . .

11A-13

CRANKSHAFT PULLEY . . . . . . . . . .

11A-14

REMOVAL AND INSTALLATION . . . . . . . .

11A-14

CAMSHAFT . . . . . . . . . . . . . . . . . . . .

11A-17

REMOVAL AND INSTALLATION . . . . . . . .

11A-17

OIL PAN . . . . . . . . . . . . . . . . . . . . . . .

11A-24

REMOVAL AND INSTALLATION . . . . . . . .

11A-24

CRANKSHAFT OIL SEAL . . . . . . . . .

11A-26

REMOVAL AND INSTALLATION . . . . . . . .

11A-26

ENGINE ASSEMBLY . . . . . . . . . . . . .

11A-29

REMOVAL AND INSTALLATION <M/T> . .

11A-29

REMOVAL AND INSTALLATION <CVT> . .

11A-36

GENERAL INFORMATION

ENGINE MECHANICAL <4A9>

11A-2

GENERAL INFORMATION

M1111000100992

Item

4A91

Total displacement mL

1,499

Bore

× Stroke mm

75.0

× 84.8

Compression ratio

10.0

Compression chamber

Pentroof

Camshaft arrangement

DOHC

Number of valve

Intake

8

Exhaust

8

Valve timing

Intake opening

BTDC 31

° − ATDC 19°

Intake closing

ABDC 21

° − ABDC 71°

Exhaust opening

BBDC 39

°

Exhaust closing

ATDC 5

°

Fuel system

Electronically controlled multipoint fuel injection

Rocker arm

Not equipped

Auto-lash adjuster

Not equipped

SERVICE SPECIFICATIONS

ENGINE MECHANICAL <4A9>

11A-3

SERVICE SPECIFICATIONS

M1112000300676

Item

Standard value

Limit

Alternator and A/C drive belt tension (When
checked)

Vibration frequency Hz

202

− 247

Tension N

392

− 588

Deflection mm (Reference)

6.8

− 9.0

Alternator and A/C drive belt tension (When
adjusted)

Vibration frequency Hz

214

− 237

Tension N

441

− 539

Deflection mm (Reference)

7.3

− 8.3

Alternator and A/C drive belt tension (When
replaced)

Vibration frequency Hz

286

− 319

Tension N

784

− 980

Deflection mm (Reference)

4.4

− 5.4

Basic ignition timing

5

° BTDC ± 3°

Ignition timing

Approximately
10

° BTDC

Idle speed r/min

700

± 50

CO contents %

0.1 or less

HC contents ppm

100 or less

Valve clearance (at cold) mm

Intake valve

0.22

± 0.04

Exhaust valve

0.30

± 0.04

Compression pressure (at engine speed of 300 r/min) kPa

1,200

Minimum
850

Compression pressure difference of all cylinders kPa

Maximum 98

Intake manifold vacuum kPa

Minimum 60

SEALANTS

M1112000500766

Item

Specified Sealant

Remark

Timing chain tensioner cover

LOCTITE 5971 or exact equivalent

Semi-drying sealant

Cylinder head cover assembly
Engine oil pan
Crankshaft rear oil seal case assembly
Flywheel bolt <M/T>

LOCTITE 2701 or equivalent

Drive plate bolt <CVT>

SPECIAL TOOLS

ENGINE MECHANICAL <4A9>

11A-4

SPECIAL TOOLS

M1112000601164

Tool

Number

Name

Use

B992080

A

B

MB992080
A: MB992081
B: MB992082

Belt tension meter set
A: Belt tension meter
B: Microphone assembly

Drive belt tension check

MB991910

MB991826

MB991955

MB991911

MB991824

MB991827

MB991825

A

B

C

D

E

F

DO NOT USE

MB991955

A: MB991824
B: MB991827
C: MB991910
D: MB991911
E: MB991825
F: MB991826

M.U.T.-III sub assembly

A: Vehicle communication

interface (V. C. I.)

B: M.U.T.-III USB cable
C: M.U.T.-III main harness

A (Vehicles with CAN
communication system)

D: M.U.T.-III main harness

B (Vehicles without CAN
communication system)

E: M.U.T.-III adapter

harness

F: M.U.T.-III trigger

harness

CAUTION

For vehicles with CAN
communication, use M.U.T.-III
main harness A to send
simulated vehicle speed. If
you connect M.U.T.-III main
harness B instead, the CAN
communication does not
function correctly.

• Drive belt tension check

• Checking the ignition timing

• Checking the idle speed

B991668

MB991668

Belt tension meter set

Drive belt tension check (used
together with V.C.I.)

Рассказать друзьям