engine MITSUBISHI 3000GT 1991 User Guide

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
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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
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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
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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.
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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.
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GENERAL - Recommended Lubricants and Lubricant Capacities Table 00-334027
8016
60
1050032
-1014
-155
-20-4-23-10
-29-20104
6SAE 5W-20 Not recommended for sustainedhigh speed vehicle operation.
** SAE 5W-30 may be used for operation in verycold weather areas where the lowest atmos-pheric temperature is below -23°C (-10°F).SELECTION OF LUBRICANTS
ENGINE OILEngine oil should be used which conform to the requirements
of the API classification “For Service SG” or “For Service
SGKD”, and have the proper SAE grade number for the
expected temperature range.
Caution
Nondetergent or straight mineral oil must never be used.
Energy Conserving OilIn order to improve fuel economy and conserve energy new,
lower friction engine oils have been developed. These oils are
readily available and can be identified by such labels as “Energy
Conserving
II”,“Energy Saving”,
“Improved Fuel Economy”,
etc.
Oil Identification Symbol
A standard symbol appears on the top of oil containers and has
three district areas for identifying various aspects of the oil.
The top portion will indicate the quality of the oil. The center
portion will show the SAE viscosity grade, such as SAEIOW-30. “Energy Conserving
II” shown in the lower portion,
indicates that the oil has fuel-saving capabilities.
72AOO.34
REAR AXLE
LubricantAPI classification GL-5
or higher
I
1 Anticipated temperature range
1 Above -23°C k-1 0°F)
1 Viscosity range
-23°C to -34°C (-10°F to -30°F)
Below -34°C (-30°F)
SAE 90SAE 85W-90SAE 8OW-90
SAE 80W. SAE 8OW-90
SAE 75W
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00-34 GENERAL - Recommended Lubricants and Lubricant Capacities Table
SELECTION OF COOLANT
COOLANTRelation between Antifreeze Concentration and Specific Gravity
I
\
‘d I
ExampleThe safe operating temperature is -15°C (5°F) when the measured specific gravity is 1.058 at the coolant
temperature of 20°C (68°F).
Caution1. If the concentration of the coolant is below 30%, the anti-corrosion property will be adversely
affected. In addition, if the concentration is above 60%, both the anti-freeze and engine cooling
properties will decrease, affecting the engine adversely. For these reasons, be sure to maintain theconcentration level within the specified range.
2. Do not use a mixture of different brands of anti-freeze.
-/‘.
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00-36GENERAL - Scheduled Maintenance Table / Maintenance Service
SCHEDULED MAINTENANCE UNDER SEVERE USAGE CONDITIONS
The maintenance items should be performed according to the following table:
Mileage Intervals Kilometers in ThousandsSevere Usage
MaintenanceService to be(Miles in Thousands)Conditions
itemPerformed
(6 (15) (22.5) (30) (37.5) (45) (50) (52.5) (60)24 36 48 60 72 80 84 96 A B C D E F G
Air Cleaner ElementReplaceMore FrequentlyXX
Spark PlugsReplaceXXXXXX
Engine OilChange Every Or3 MonthsEvery 4,800 Km (3,000 Miles)x x x xX
Engine Oil FilterReplace Every or6 MonthsEvery 9,600 Km (6.000 Miles)x x x xX
Disc Brake PadsInspect for WearMore FrequentlyXX
Severe usage conditions
A-Driving in dusty conditionsE -B -Police, taxi, or commercial type operationF -Driving in sandy areas
C -Extensive idlingG -Driving in salty areas
D -Short trip operation at freezing temperaturesMore than 50% operation in heavy city traffic during
(engine not thoroughly warmed up)hot weather above 32°C (90°F)MAINTENANCE SERVICE
1. FUEL SYSTEM (TANK, LINES, CONNECTIONS
AND FUEL FILLER CAP) (Check for leaks)
/ 2.
FUEL HOSES (Check for leaks or damage)MWShGC
1. Check for damage or leakage in the fuel lines and
connections and looseness of the fuel filler cap.
2.Inspect the surface of fuel hoses for heat and mechanical
damage. Hard and brittle rubber, cracking, checking, tears,
cuts, abrasions and excessive swelling indicate deteriora-
tion of the rubber.
3.If the fabric casing of the rubber hose is exposed by cracks
and abrasions in the fuel system, the hoses should be
changed.
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GENERAL - Maintenance Service00-37
3. AIR CLEANER ELEMENT (Replace)
MOOSAKHThe air cleaner element will become dirty and loaded with dust
during use, and the filtering effect will be substantially reduced.
Replace it with a new one.

(1) Disconnect the air-flow sensor connector.
(2) Remove the air intake hose from the air-flow sensor.
(3) Unclamp the air cleaner cover.
(4) Remove the air cleaner cover and air-flow sensor.
CautionRemove the air cleaner cover with care not to give
shock to the air-flow sensor.
(5) Take out the air cleaner element.

(1) Remove the clutch booster vacuum pipe mounting bolt.
(2) Disconnect the air-flow sensor connector.
(3) Remove air intake hose A from the air-flow sensor.
(4) Unclamp the air cleaner cover.
(5) Remove the air cleaner cover and air-flow sensor.
CautionRemove the air cleaner cover with care not to give
shock to the air-flow sensor.
(6) Take out the air cleaner element.
4. SPARK PLUGS (Replace)
MOOSAOIThe spark plugs must fire properly to assure proper engine
performance and emission-control.
Therefore, they should be replaced periodically with new ones.
Spark plug
NGKPFRGJ-1 1
NIPPON DENS0
PK20PR-PI 1Spark plug gap: 1.0
- 1.1 mm LO39 - -043 in.)
NOTEFor the platinum plug, use care not to damage the platinum tip.
Specified torque: 25 Nm (15
ft.lbs.15. TIMING BELT (Replace)
MOOSBADReplace the belt with a new one periodically to assure proper
engine performance.
For removal and installation procedures, refer to GROUP 11
-Timing Belt.
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