Mitsubishi Colt Ralliart. Instruction - page 1
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GROUP 11A
ENGINE
MECHANICAL
<4A9>
CONTENTS
GENERAL INFORMATION . . . . . . . .
SERVICE SPECIFICATIONS. . . . . . .
SEALANTS . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOLS. . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE. . . . . . . . . . .
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 . . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
11A-14
CAMSHAFT . . . . . . . . . . . . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
11A-17
OIL PAN . . . . . . . . . . . . . . . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
11A-24
CRANKSHAFT OIL SEAL . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
11A-26
ENGINE ASSEMBLY . . . . . . . . . . . . .
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.)
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