spark plugs replace MITSUBISHI 3000GT 1991 Service Manual

GENERAL - Scheduled Maintenance Table00-35
SCHEDULED MAINTENANCE TABLE
MOOOA- _SCHEDULED MAINTENANCE SERVICES FOR EMISSION CONTROL AND PROPER
L VEHICLE PERFORMANCE
Inspection and services should be performed any time a malfunction is observed or suspected. Retain
receipts for all vehicle emission services to protect your emission warranty.
No, Emission Control SystemServiceKilometersinThousands 24 48 72 80 96
MaintenanceIntervalsMileage in Thousands 15 30 45 50 60
1Check Fuel System (Tank. Line and Connections and Fuel Filler Cap) forLeaks Every 5 Yearsorx
2Check Fuel Hoses for Leaks or Damage Every 2 YearsorXX
3Replace Air Cleaner ElementatXX
4Replace Spark PlugsatXGENERAL MAINTENANCE SERVICE FOR PROPER VEHICLE PERFORMANCE
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10.
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5-
6-
7
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8
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9-
10
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11-
12-
13
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14
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15
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16
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17
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General Maintenance
Automatic Transaxle Fluid
Exhaust System (ConnectionCheck and Service as RequiredPortion of Muffler, Pipings andEvery 2 YearsorXXConverter Heat Shields)
NOTELSD: Limited-slip differential
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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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