1990 MITSUBISHI SPYDER engine

GENERAL Main and Adhesive Table
MAIN SEALANT AND ADHESIVE TABLE
SEALANTS FOR ENGINE ACCESSORIES
Application Recommended brand
Sealing between rocker cover and camshaft bearing c ap
DOHC ATD Part No. 8680 or equivalent
and
engines only)
1Sealing between semi-circular packing and rocker co ver and between
semi-circular packing and cylinder head
Oil pressure switch (except
and engines). . .
Engine coolant temperature switch, Engine coolant t emperature sensor, Nut Locking Part No. 4171 or
valve, switch, Joints, Engine coolant temperature lent
gauge unit (large size)
Engine coolant temperature gauge unit (small size, only) ATD Part No. 8660 or equivalent
Oil pan (except
engine)MITSUBISHI GENUINE ‘Part
0 or equivalent
SEALING BETWEEN GLASS AND WEATHERSTRIP
Application
Sealing between tempered glass and weatherstrip
Sealing between body flange and weatherstrip
Sealing between laminated glass and weatherstripRecommended brand
ATD Part No. 8513 or equivalent
ATD Part No. 8509 or equivalent
ADHESION WITH RIBBON SEALER
Application Recommended brand
Waterproof film for door, Fender panel, Splash shie ld, Mud guard, Rear
ATD Part No. 8625 or equivalent
combination light
ADHESIVES FOR INTERIOR TRIM
Application Recommended brandI
Adhesion of polyvinyl chloride sheetI Part No. 368 or equivalentI
Adhesion of door weatherstrip to body ATD No. 8001 or ATD Part No.
8011 or equivalent
Sealing between grommet or packing, and metal seal
Adhesion of headlining and other interior trim mate rials
Adhesion of fuel tank to pad
ATD Part No. 8513 or equivalent
Part No. or ATD Part No.
8080 or equivalent
BODY SEALANT
ApplicationRecommended brandI
Sealing of sheet metal, drip rail, floor, body side panel, trunk, front panel ATD No. 8531 or ATD Part No.
and the like joints8848or equivalent
Sealing of
hinges
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ENGINE
CONTENTS
ENGINE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE OVERHAUL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE OVERHAUL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINE OVERHAUL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ENGINE
CONTENTS
CAMSHAFT AND CAMSHAFT OIL
SEAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
CRANKSHAFT FRONT OIL SEAL . . . . . . . 28
CRANKSHAFT PULLEY . . . . . . . . . . . . . . . . . 21
CRANKSHAFT REAR OIL SEAL. . . . . . . .29
Curb Speed Check. . . . . . . . . . . . . . . . . .10
Drive Belt Tension Check and
Adjustment . , . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Mixture Check . . . . . . . . . . . . . . . . . .
. . . . .10
Ignition Timing Check. . . . . . . . . . . .. . . . . . . . .
Lash Adjuster Check . . . . . . . . . . . . . . . .
CYLINDER HEAD GASKET . . . . . . . . . . . . .31
ENGINE ASSEMBLY. . . . . . . . . . . . . . . . . . . .16
GENERAL INFORMATION. . . . . . . . . . . . . . . .2
OIL PAN AND OIL SCREEN . . . . . . . . . . . .26
ON-VEHICLE SERVICE. . . . . . . . . . . . . . . . .7
Basic Idle Speed Adjustment
. . . . . . . . . . . . . . . . . . . . . . Refer to GROUP
Lash Adjuster Replacement. . . . . . . .. . . .15
Manifold Vacuum Check. . . . . . . . . . . . . . . ....13
SEALANTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SERVICE SPECIFICATIONS. . . . . . . . . . . . . .3
SPECIAL TOOLS. . . . . . . . . . . . . . . . . . . . . . . .4
BELT. . . . . . . . . . . . . . . . . . . . . . . . . . .36
TIMING BELT . . . . . . . . . . . . . . . . . . . . . . . .41
Compression Pressure Check . . . . . . . . . . . .
. . 11TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . 6

ENGINE General Information
GENERAL INFORMATION
Items SpecificationsI
Number of cylinders
Bore mm (in.)
Stroke mm (in.)
In-line DOHC
85.0
(3.28)
Piston displacement
Compression ratio
Firing order
Counterbalance shaft8.5
Equipped
Valve timing Intake valve
Exhaust valve Opens
Closes
Opens
Closes 21 “BTDC
.
Lubrication systemIPressure feed-full flow , ,I
Oil pump type
LUBRICATION SYSTEM
Involute gear type
To
Camshaft
Counterbalance
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Oil
Oil pressure switch
Crankshaft
Counterbalance shaft

ENGINE Service Specifications
SERVICE SPECIFICATIONS
I
1
Items
Drive beltTensionWhen checked
(For generator) When a new belt is installed
When a used belt is installed
DeflectionWhenchecked
mm (in.)When a new belt is installed
value>When a used belt is installed
Drive belt Tension
When checked
(For power When a new belt is installed
steering pump) When a used belt is installed
DeflectionWhenchecked
mm (in.)When a new belt is installed
When a used belt is installed
Drive belt Tension
(Ibs.) When checked
[For A/C When a new belt is installed
When a used belt is installed
DeflectionWhenchecked
mm (in.)When a new belt is installed
When a used belt is installed
ignition timing at idle
ignition timing at idle
idle speed
contents
contents ppm
pressure (at 250 400 (psi)
pressure difference of all cylinder (psi)
ntake manifold vacuum
head bolt length mm (in.)
tensioner push rod movement mm (in.)
belt tension torque
tensioner rod protrusion mm (in.)
belt tension mm (in.)
Standard valueLimit
2 4 5 - 4 9 0 ( 5 5 . 1 1 1 0 . 2 )
490 886 (110.2 154.3)
‘9.0
7.5 9.0
10.0
.245 -490 (55.1 110.2)
490 154.3)
343
441 (77.2 99.2)
5.5
8.0
6.0 7.0
255 333 (57.3 75.0)
382 441, (86.0 99.2)
255 333 (57.3 75.0)
6 . 5 - 7 . 5
5.5 6.0
6.5 7.5
3”
Approx. BTDC
100
0.5 or less
100 or less
1250 (178)min. 935 (133)
max. 100
min. 60
99.4 (3.91)
Within
3 . 5 ( 2 . 6 )
3.8 4.5
5 7
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ENGINE
SEALANTS
Semi-circular packing and rocker cover
Bearing cap (front, rear) and cylinder head Specified sealant ATD Part No. 8860 or equivalent
pan, cylinder block and thermostat case assembly
MITSUBISHI GENUINE PART or equivalent
Flywheel bolt or drive plate bolt Stud locking 4170 or .
SPECIAL TOOLS
Oil pan gasket cutter
Use with
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ENGINE Special Tools
of the transaxle
Crankshaft sprocket
Lash adjuster removal
Valve lifter set
. .
End yoke holder
Crankshaft sprocket
193General service tool Preventing foreign substances
from entering transfer
Plug
654
Cylinder head bolt
wrench (12) Removal and installation of
cylinder head bolt
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ENGINE,
TROUBLESHOOTING
Oil filter cloggedInstall new filter
Oil pump gears or cover wornReplace gears cover
Thin or diluted engine oil Change engine oil to correct viscosity
Oil relief valve stuck (open) Repair relief valve
Excessive bearing clearanceReplace bearings
pressure too high Oil relief valve stuck (closed) Repair relief valve
Joisy valves Incorrect lash adjuster Bleed air or rep lace lash adjuster
Thin or diluted engine oil (low oil pressure)
Change engine oil ,
Valve stem or valve guide worn or damaged Replace va lve guide
rod noise/Insufficient oil supplyCheck engine oil level
nain bearing noise Low oil pressure Refer
pressure drop”
Thin or diluted engine oil Change engine oil
Excessive bearing clearance Replace bearings
belt noiseIncorrect belt tension Adjust belt tension and/or replace tim-ing belt
engine Loose engine roll stopper (Front, Rear)Retighten
ng and vibration
Loose transaxle mount bracketRetighten
Loose engine mount bracketRetighten
Loose center memberRetighten
Broken transaxle mount insulatorReplace
Broken engine mount insulatorReplace
Broken roll stopper insulatorReplace
Symptom
Probable cause
Remedy.
Compression too low Cylinder head gasket blownReplace gasket
Piston ring worn or damagedReplace rings
Piston or cylinder worn
Repair or replace piston cylinder
block
Valve seat worn or damagedRepair or replace valve and/or
Oil pressure drop Engine oil level too low Check engine oil level
Oil pressure switch faulty
pressure switch
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