Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 21
11-1
GROUP 11
CONTENTS
ENGINE MECHANICAL <2.4L ENGINE> . . . . . . . . . . . . . . . . . .
ENGINE OVERHAUL <2.4L ENGINE> . . . . . . . . . . . . . . . . . . . .
ENGINE MECHANICAL <3.0L ENGINE> . . . . . . . . . . . . . . . . . .
ENGINE OVERHAUL <3.0L ENGINE> . . . . . . . . . . . . . . . . . . . .
11A-2
GROUP 11A
CONTENTS
GENERAL DESCRIPTION. . . . . . . . .
ENGINE DIAGNOSIS. . . . . . . . . . . . .
SPECIAL TOOLS. . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE. . . . . . . . . . .
DRIVE BELT TENSION CHECK AND
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . .
IGNITION TIMING CHECK . . . . . . . . . . . . .
IDLE MIXTURE CHECK . . . . . . . . . . . . . . .
CURB IDLE SPEED CHECK . . . . . . . . . . .
COMPRESSION PRESSURE CHECK. . . .
MANIFOLD VACUUM CHECK . . . . . . . . . .
LASH ADJUSTER CHECK . . . . . . . . . . . . .
ENGINE ASSEMBLY . . . . . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
CAMSHAFT AND CAMSHAFT
OIL SEAL . . . . . . . . . . . . . . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
OIL PAN . . . . . . . . . . . . . . . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . .
CRANKSHAFT FRONT OIL SEAL. . .
REMOVAL AND INSTALLATION . . . . . . . .
CRANKSHAFT REAR OIL SEAL. . . .
REMOVAL AND INSTALLATION . . . . . . . .
CYLINDER HEAD GASKET . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
TIMING BELT . . . . . . . . . . . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
TIMING BELT B . . . . . . . . . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
SPECIFICATIONS . . . . . . . . . . . . . . .
FASTENER TIGHTENING
SPECIFICATIONS. . . . . . . . . . . . . . . . . . . .
SERVICE SPECIFICATIONS . . . . . . . . . . .
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GENERAL DESCRIPTION
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ENGINE MECHANICAL <2.4L ENGINE>
11A-3
.
G EN ER A L DESC RIPTIO N
M1111000100099
The 4G64 (2.4L) engine is an in-line four cylinder engine. The cylinder numbers are assigned as 1-2-3-4 from
the front of the engine (timing belt side). This engine is fired in the order of the 1, 3, 4 and 2 cylinders.
EN G IN E D IA G N O SIS
M1111000700109
ITEMS
SPECIFICATIONS
Type
In-line SOHC
Number of cylinders
4
Bore mm (in)
86.5 (3.41)
Stroke mm (in)
100.0 (3.94)
Piston displacement cm
3
(cu in)
2,351 (143.4)
Compression ratio
9.0
Firing order
1-3-4-2
Counterbalance shaft
Equipped
Valve timing
Intake valve
Opens (BTDC)
16
°
Closes (ABDC)
60
°
<M/T>
53
°
<A/T>
Exhaust valve
Opens (BBDC)
60
°
<M/T>
50
°
<A/T>
Closes (ATDC)
16
°
Lubrication
Pressure feed-full flow filtration
Oil pump type
Involute gear type
SYMPTOMS
PROBABLE CAUSE
REMEDY
Compression is too
low
Blown cylinder head gasket
Replace the gasket
Worn or damaged piston rings
Replace the rings
Worn piston or cylinder
Repair or replace the piston and/or the
cylinder block
Worn or damaged valve seat
Repair or replace the valve and/or the
seat ring
Drop in oil pressure
Engine oil level is too low
Check the engine oil level
Malfunction of oil pressure switch
Replace the oil pressure switch
Clogged oil filter
Install a new filter
Worn oil pump gears or cover
Replace the gears and/or the cover
Thin or diluted engine oil
Change the engine oil to correct viscosity
Stuck (opened) oil relief valve
Repair the relief valve
Excessive bearing clearance
Replace the bearings
Oil pressure too high
stuck (closed) oil relief valve
Repair the relief valve
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SPECIAL TOOLS
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ENGINE MECHANICAL <2.4L ENGINE>
11A-4
SPECIA L TO O LS
M1111000600168
Noisy valves
Malfunction of lash adjuster (including
entry of air into high pressure chamber)
Check the lash adjuster
Thin or diluted engine oil (low oil
pressure)
Change the engine oil
Worn or damaged valve stem or valve
guide
Replace the valve and/or the guide
Connecting rod noise/
main bearing noise
Insufficient oil supply
Check the engine oil level
Low oil pressure
Refer to oil pressure drop symptoms
above
Thin or diluted engine oil
Change the engine oil
Excessive bearing clearance
Replace the bearings
SYMPTOMS
PROBABLE CAUSE
REMEDY
TOOL
TOOL NUMBER AND
NAME
SUPERSESSION
APPLICATION
MB991502
Scan tool (MUT-II)
MB991496-OD
•
Ignition timing check
•
Idle speed check
MB991453
Engine hanger assembly
MZ203827-01
Supporting the engine
assembly during removal
and installation of the
transaxle
GENERAL SERVICE
TOOL
MZ203827
Engine lifter
MZ203827-01
MB990767
End yoke holder
MB990767-01
Holding the camshaft
sprocket when loosening
and tightening bolt
MD998719
Crankshaft pulley holder
pin
MT308239
B991502
MB991453
MZ203827
MB990767
MD998719
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