Mitsubishi Eclipse. Manual — part 101

80-1

GROUP 80

CONFIGURATION

DIAGRAMS

CONTENTS

CONFIGURATION DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . .

80A

SPLICE LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

80B

NOTES

11A-1

GROUP 11A

ENGINE

MECHANICAL

<2.4L>

CONTENTS

GENERAL DESCRIPTION. . . . . . . . .

11A-2

ENGINE DIAGNOSIS. . . . . . . . . . . . .

11A-2

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

11A-4

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

11A-7

DRIVE BELT TENSION CHECK AND
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . .

11A-7

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

11A-7

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

11A-8

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

11A-9

COMPRESSION PRESSURE CHECK. . . .

11A-10

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

11A-11

LASH ADJUSTER CHECK . . . . . . . . . . . . .

11A-12

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

11A-14

REMOVAL AND INSTALLATION . . . . . . . .

11A-14

CAMSHAFT AND CAMSHAFT OIL
SEAL . . . . . . . . . . . . . . . . . . . . . . . . .

11A-23

REMOVAL AND INSTALLATION . . . . . . . .

11A-23

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

11A-26

REMOVAL AND INSTALLATION . . . . . . . .

11A-26

INSPECTION. . . . . . . . . . . . . . . . . . . . . . . .

11A-28

CRANKSHAFT FRONT OIL SEAL. . .

11A-28

REMOVAL AND INSTALLATION . . . . . . . .

11A-28

CRANKSHAFT REAR OIL SEAL. . . .

11A-30

REMOVAL AND INSTALLATION . . . . . . . .

11A-30

CYLINDER HEAD GASKET . . . . . . . .

11A-32

REMOVAL AND INSTALLATION . . . . . . . .

11A-32

TIMING BELT . . . . . . . . . . . . . . . . . . .

11A-38

REMOVAL AND INSTALLATION . . . . . . . .

11A-38

TIMING BELT B . . . . . . . . . . . . . . . . .

11A-42

REMOVAL AND INSTALLATION . . . . . . . .

11A-42

SPECIFICATIONS . . . . . . . . . . . . . . .

11A-45

SPECIFICATIONS. . . . . . . . . . . . . . . . . . . .

11A-45

SPECIFICATIONS. . . . . . . . . . . . . . . . . . . .

11A-46

SEALANT AND ADHESIVE . . . . . . . . . . . .

11A-46

GENERAL DESCRIPTION

TSB Revision

ENGINE MECHANICAL <2.4L>

11A-2

GENERAL DESCRIPTION

M1111000100420

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.

ENGINE DIAGNOSIS

M1111000700206

ITEM

SPECIFICATION

Type

In-line SOHC

Number of cylinders

4

Bore mm (in)

86.5 (3.41)

Stroke mm (in)

100.0 (3.94)

Total 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 system

Pressure feed, full-flow filtration

Oil pump type

Involute gear type

SYMPTOM

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 engine oil
pressure

Engine oil level is too low

Check the engine oil level

Malfunction of engine oil pressure switch Replace the engine 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

Engine oil pressure
too high

stuck (closed) oil relief valve

Repair the relief valve