1991 MITSUBISHI 3000GT engine

00-20GENERAL - Special Handling Instructions for AWD Models
14A019fOOPOO38
BalancingmachineOOA0046
Pick-up stand
OOA0024
I
FRONT WHEEL MEASUREMENTS1. Place the front wheels on the brake tester.
2. Perform the brake test.
CautionThe rear wheels should remain on the ground.
3.If the brake dragging force exceeds the specified value, jack
up the vehicle and manually rotate each wheel to check the
rotation condition of each wheel.
NOTEIf the brake dragging force exceeds the specified value, the
cause may be the effect of the viscous coupling’s dragging
force, so jack up the front wheels and check the rotation
condition of the wheels in this state for no effect by the
viscous coupling’s dragging force.
REAR WHEEL MEASUREMENTSAfter placing the rear wheels on the brake tester, follow the
same procedures as for the front wheel measurements.
WHEEL BALANCE
FRONT WHEEL MEASUREMENTS‘d
1. Jack up the rear wheels, and place an axle stand at the
designated part of the side sill.
2. Jack up the front wheels and set a pick-up stand and
balancing machine in place.
Caution
1.Set so that the front and rear of the vehicle are at
the same height.
2. Release the parking brake.
3. Rotate each wheel manually and check to be sure
that there is no dragging.
3. Use the engine to drive the tires, and then make the
measurements.
Caution
1.If an error is indicated in the state of engine drive,
motor drive can be used concurrently.
2. Do not operate the clutch suddenly, or increase or
reduce speed suddenly during the work.
REAR WHEEL MEASUREMENTS1. Jack up the front wheels, and place an axle stand at the
designated part of the side sill.
2. Jack up the rear wheels, and then, after setting a pick-up
stand and balancing machine in place; follow the same
procedure as for front wheel measurements.
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TSB RevisionSPECIAL HANDLING INSTRUCTIONS
FOR AWD MODELSMOOUAACBRAKE TEST
‘dIn order to stabilize the viscous coupling’s dragging force, the
brake test should always be conducted after the speedometer
test.

GENERAL - General Data and Specifications
GENERAL DATA AND SPECIFICATIONS
00-21
MOOHA- -
c-i----J---i!--8GENERALSPECIFICATIONS
Vehicle dimensionsmm (in.)
Overall length
1
Overall width2
Overall height3
Wheelbase4
Tread
Front5
Rear6
OverhangFront7
Rear8
Minimum running groundclearance9
Angle of approachdegrees10
Angle of departuredegrees11
Vehicle weightkg (tbs.)
Curb weights
MIT
AI-T
Gross vehicle weight rating
Gross axle weight rating
Front
Rear
Seating capacity
Engine
Model No.
Piston displacementcm” (cu.in.)
3000GT
(Non-Turbo)
4,545(178.9)
1,840(72.4)
1,285(50.6)
2,470(97.2)
1,560(61.4)
1,580(62.2)
1,025(40.4)
1,050(41.3)
145(5.7)
12.2”
16.9”
1,455 (3,208)
1,495 (3,296)
1,925 (4,244)
1,100 (2,425)
850 (1.874)
4
6G72-(DOHC)
2,972 (181.4)3000GT SL
(Non-Turbo)
4,545(178.9)
1,840(72.4)
1,285
(50.6)
2,470(97.2)
1,560(61.4)
1,580(62.2)
1,025(40.4)
1,050(41.3)
145(5.7)
12.2”
16.9”
1,520 (3,351)
1,560 (3,439)
1,925 (4.244)
1,100 (2,425)
850 (1,874)
4
6G72-(DOHC) -
2,972 (181.4)
+64
OOFO015
3000GT VR-4
(Turbo)
4,545(I 78.9)
1,840
(72.4)
1,285(50.6)
2,470(97.2)
1,560(61.4)
1,580(62.2)
1,025(40.4)
1,050(41.3)
145 (5.7)
12.2”
16.9”
1,710 (3.770)1,720 (3,792)“’
-
2,050 (4.519)
1,110 (2,447)940
(2,072)
4
6G72-(DOHC)
2,972 (181.4)
NOTE“I : <4ws>
1 TSB Revision

00-22GENERAL - General Data and Specifications
Transaxle
Model No. -Type
Manual transaxle
Automatic transaxle
Fuel system
Fuel supply system3000GT
(Non-Turbo)
F5M33 -5speed manual
F4A33 - 4-speedautomatic
Electronic
control
multi-pointinjection
3000GT SL
(Non-Turbo)
F5M33 -5-speed manual
F4A33 - 4-speedautomatic
Electronic
control
multi-point
injection
3000GT VR-4
(Turbo)W5MGl
-5-speed manual
-
Electronic
control
multi-pointinjectionENGINE SPECIFICATIONS
Items
Type
Number of cylinders
Boremm (in.)
Strokemm (in.)
Piston displacementcm3 (cu.in.)
Compression ratio
Firing orderTRANSAXLE SPECIFICATIONS
FL
Items
Type
Gear ratio
Final reduction ratio1st
2n’d
3rd
4th
5th
Reverse
Transaxle
Transfer
L
6672 Non-Turbo
V60” DOHCFront Transverse
6
91 .I (3.59)
76.0 (2.99)
2,972 (181.4)
10
1-2-3-4-5-6
6672 Turbo
V60” DOHC
Front Transverse
6
91 .I (3.59)
76.0 (2.99)
2,972 (181.4)
8.0
1-2-3-4-5-6
F5M33W5MGlF4A33
5-speed M/T
3.090
1.833
1.217
0.888
0.741
3.166
4.153
-
5-speed MIT
3.071
1.739
1.103
0.823
0.659
3.076
3.972
0.814i
4-speed AlT
2.551
1.488
1 .ooo
0.685
-
2.176
3.958
1 TSB Revision

00-24GENERAL - Master Troubleshooting
MASTER TROUBLESHOOTING
MOOWWENGINE OVERHEATS
Symptom
Engine overheatsProbable cause
Cooling system
faulty
, incorrect ignition timing
Reference page
14-3
11-13
v’.ENGINE WILL NOT CRANK OR CRANKS SLOWLY
Symptom
Engine will not crankor cranks slowly
Probable cause
Starting system faulty
Reference page
16-15ENGINE WILL NOT START OR HARD TO START (CRANKS OK)
1 Symptom
Engine will not start or hard to
start (Cranks OK)Probable causeNo fuel supply to injector
injection system problems
Ignition system problems
Vacuum leaksl Purge control valve hosel Vacuum hosesl Intake manifoldl Air intake plenuml Throttle bodyl EGR valve
Reference page
-
-
16-25
17-3
Compression too low
11-15
d
1 TSB Revision1

GENERAL - Master Troubleshooting
ROUGH IDLE OR ENGINE STALLS
LProbable causeReference page or remedy
Symptom
Rough idle or engine stallsVacuum leaks
l Purge control valve hosel Vacuum hosesl Intake manifoldl Air intake plenuml Throttle bodyl EGR valve
Ignition system problems16-25
Idle speed set too lowCheck idle speed controlsystem
Idle mixture too lean or too rich-
Fuel injection system problems-
Exhaust gas recirculation (EGR) systemproblems17-11
Engine overheats
114-3
Compression too lowIll-15
ENGINE HESITATES OR POOR ACCELERATION
L
Reference pageSymptomProbable cause
Ignition system problem
Vacuum leaksl Purge control valve hosel Vacuum hosesl Intake manifoldl Air intake plenuml Throttle bodyl EGR valve
Air cleaner clogged
Fuel line clogged
Fuel injection system problem
Emission control system problem
l EGR system always on
Engine overheats
Compression too low11-13
Engine hesitates or poor
acceleration
17-3
15-9
-
17-11
14-3
TSB Revision

00-26GENERAL - Master Troubleshooting
ENGINE DIESELING
Symptom
Engine dieseling (runs afterignition switch is turned off)
Probable cause
Incorrect ignition timing
Reference page
11-13EXCESSIVE OIL CONSUMPTION
ISymptomProbable cause( Reference page or remedy(
Excessive oil consumptionOil leakRepair as necessary
Positive crankcase ventilation line clogged
Valve stem seal worn or damaged
17-5
11-34
I----Valve stem worn11-34I
IPiston ring worn or damaged11-44IPOOR FUEL MILEAGE
NOISE
SymptomProbable causeReference page or remedy
NoiseLoose bolts and nutsRetighten as necessary
Engine noise
il-10
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GENERAL - Lubrication and Maintenance00-31LUBRICATION AND MAINTE-
NANCEMOOPA- -
iiMaintenance and lubrication service recommenda-
tions have been compiled to provide maximum
protection for the vehicle owner’s investment
against all reasonable types of driving conditions.
Since these conditions vary with the individual
vehicle owner’s driving habits, the area in which the
vehicle is operated and the type of driving to which
the vehicle is subjected, it is necessary to prescribe
lubrication and maintenance service on a time
frequency as well as mileage interval basis.
Oils, lubricants and greases are classified and
graded according to standards recommended by the
Society of Automotive Engineers
(SAE), the Amer-
ican Petroleum Institute (API) and the National
Lubricating Grease Institute
(NLGI).MAINTENANCE SCHEDULES
Information for service maintenance is provided
under “SCHEDULED MAINTENANCE TABLE”.
Three schedules are provided; one for “Required
Maintenance”, one for “General Maintenance” and
one for “Severe Usage Service”.
Item numbers in the “SCHEDULED MAINTE-
NANCE TABLE” correspond to the item numbers in
the “MAINTENANCE SERVICE” section.
LSEVERE SERVICE
Vehicles operating under severe service conditions
will require more frequent service.
Component service information is included in
appropriate units for vehicles operating under one or
more of the following conditions:
1. Police, taxi, or commercial type operation
2. Operation of Vehicle
(1) Short-trip operation at freezing temperature
(engine not thoroughly warmed up)
(2) More than 50% operation in heavy city
traffic during hot weather above 32°C
(90°F)(3) Extensive idling
(4) Driving in sandy areas
(5) Driving in salty areas
(6) Driving in dusty conditions
ENGINE OIL
The SAE grade number indicates the viscosity of
engine oils, for example, SAE 30, which is a single
grade oil. Engine oils are also identified by a dual
number, for example, SAE 1 OW-30, which indicates
a multigrade oil.
The API classification system defines oil perform-
ance in terms of engine usage. Only engine oil
idesigned “For Service SG” or “For Service
SGXD”,when available, should be used. These oils contain
sufficient chemical additives to provide maximumengine protection. Both the SAE grade and the API
designation can be found on the container.
Caution
Test results submitted to EPA have shown thatlaboratory animals develop skin cancer after
prolonged contact with used engine oil. Accor-dingly, the potential exists for humans to de-
velop a number of skin disorders, including
cancer, from such exposure to used engine oil.
Care should be taken, therefore, when changing
engine oil, to minimize the amount and length ofexposure time to used engine oil on your skin.
Protective clothing and gloves, that cannot be
penetrated by oil, should be worn. The skin
should be thoroughly washed with soap and
water, or use waterless hand cleaner, to removeany used engine oil. Do not use gasoline,
thinners, or solvents.GEAR
LUEiRlCANTSThe SAE grade number also indicates the viscosity
of Multi-Purpose Gear Lubricants.
The API classification system defines gear lubri-
cants in terms of usage. Typically gear lubricants
conforming to API GL-4 or GL-5 with a viscosity of
SAE
75W-85W are recommended for manual trans-
axle.
LUBRICANTS
- GREASES
Semi-solid lubricants, bear the
NLGI designation and
are further classified as grades 0, 1, 2, 3 etc.
Whenever “Chassis Lubricant” is specified,
Multi-Purpose Grease,
NLGI grade 2, should be used.
FUEL USAGE STATEMENT
Use premium unleaded gasoline having a minimum
octane rating of 91,
(R + M)/2. However, it is also
possible to use unleaded gasoline with an octane
rating of at least 87.
Unleaded gasolines only must be used in vehicles
equipped with catalyst emission control systems.
All vehicles, so equipped, have labels located on the
instrument panel and on the back of fuel filler lid that
state, “UNLEADED GASOLINE ONLY”. These vehi-
cles also have fuel filler tubes especially designed to
accept the smaller diameter unleaded gasoline
dispensing nozzles only.
MATERIALS ADDED TO FUEL
Indiscriminate use of fuel system cleaning agents
should be avoided. Many of these materials in-
tended for gum and varnish removal may contain
highly active solvents or similar ingredients that can
be harmful to gasket and diaphragm materials used
in fuel system component parts.
1 TSB Revision

00-32 GENERAL - Recommended Lubricants and Lubricant Capacities Table
RECOMMENDED LUBRICANTS AND LUBRICANT CAPACITIES TABLE
MOORA- -RECOMMENDED LUBRICANTS
\L/
DIA-QUEEN LONG-LIFE COOLANT (Part No. 0103044) orLUBRICANT CAPACITIES TABLE
Description
Engine oil
Crankcase
(excluding oil filter and oil cooler)
Oil filter
Oil cooler (Turbo)
Cooling system (including heater and coolant
reserve system)
Manual transaxle


Transfer
Automatic transaxle
Rear axle
Power steering
<2ws>
<4ws>
Fuel tank
Metric measureU.S. measure
4.0 liters4.2 qts.
0.3 liter1/2qt. s
0.21 liter112 qt.
8.0 liters8.5 qts.
2.3 liters2.4 qts.
2.4 liters
2.5 qts.
0.27 liter.29 qt.
7.5 liters
7.9 qts.
1
.I liters1.16qts.
0.9 liter
.95 qt.
1.5 liters1.59 qts.
75 liters
19.8 gals.
TSB Revision1
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