spark plugs replace MITSUBISHI MONTERO 1998 Service Manual

(2) - Use Texaco MTX FM fluid.








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QUICK-SERVICE
SERVICE INTERVALS & SPECIFICATIONS
REPLACEMENT INTERVALS TABLE (DIAMANTE)








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Component Miles
Air Filter ........................................ 30,000
Automatic Transaxle Fluid ............................ ( 1)
Coolant ........................................... 30,000
Oil ................................................. 7500
Oil Filter .................................... ( 2) 15,000
Spark Plugs ....................................... 60,000
Spark Plug Wires .................................. 60,000
Timing Belt ....................................... 60,000
( 1) - Inspect fluid every 15,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.
( 2) - Replace oil filter at oil change if annual mileage is
less than 7500 miles.









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REPLACEMENT INTERVALS TABLE (ECLIPSE)








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Component Miles
Air Filter ........................................ 30,000
Automatic Transaxle Fluid ............................ ( 1)
Coolant ........................................... 30,000
Oil
Non-Turbo ......................................... 7500
Turbo ............................................. 5000
Oil Filter
Non-Turbo ................................... ( 2) 15,000
Turbo ....................................... ( 2) 10,000
Spark Plugs ....................................... 30,000
Spark Plug Wires .................................. 60,000
Transfer Case Fluid .................................. ( 3)
Timing Belt ....................................... 60,000
( 1) - Inspect fluid every 15,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.
( 2) - Replace oil filter at oil change if annual mileage is
less than 7500 miles.
( 3) - Inspect fluid every 30,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.









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REPLACEMENT INTERVALS TABLE (GALANT)








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Component Miles
Air Filter ........................................ 30,000
Automatic Transaxle Fluid ............................ ( 1)
Coolant .............................................. ( 2)

Oil ................................................. 7500
Oil Filter .................................... (3) 15,000
Spark Plugs ....................................... 30,000
Spark Plug Wires .................................. 60,000
Timing & Balance Shaft Belts ...................... 60,000
( 1) - Inspect fluid every 15,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.
( 2) - Inspect fluid every 30,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.
( 3) - Replace oil filter at oil change if annual mileage is
less than 7500 miles.









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REPLACEMENT INTERVALS TABLE (MIRAGE)








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Component Miles
Air Filter ........................................ 30,000
Automatic Transaxle Fluid ............................ ( 1)
Coolant .............................................. ( 2)
Oil ................................................. 7500
Oil Filter .................................... ( 3) 15,000
Spark Plugs ....................................... 30,000
Spark Plug Wires .................................. 60,000
Timing Belt ....................................... 60,000
( 1) - Inspect fluid every 15,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.
( 2) - Inspect fluid every 30,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.
( 3) - Replace oil filter at oil change if annual mileage is
less than 7500 miles.









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REPLACEMENT INTERVALS TABLE (MONTERO)








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Component Miles
Air Filter ........................................ 30,000
Automatic Transmission Fluid ......................... ( 1)
Coolant ........................................... 30,000
Front & Rear Axle Fluid ( 2) ....................... 30,000
Oil ................................................. 7500
Oil Filter .................................... ( 3) 15,000
Manual Transmission .................................. ( 4)
Spark Plugs ( 5) ................................... 60,000
Spark Plug Wires .................................. 60,000
Timing Belt ....................................... 60,000
( 1) - Inspect fluid every 15,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.
( 2) - Limited-slip differential.
( 3) - Replace oil filter at oil change if annual mileage is
less than 7500 miles.
( 4) - Inspect fluid every 30,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.

(5) - Use Platinum spark plugs only.








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REPLACEMENT INTERVALS TABLE (MONTERO SPORT)








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Component Miles
Air Filter ........................................ 30,000
Automatic Transmission
Except 4WD ......................................... ( 1)
4WD ............................................. 30,000
Axle Fluid ( 2) .................................... 30,000
Coolant ........................................... 30,000
Oil ................................................. 7500
Oil Filter .................................... ( 3) 15,000
Spark Plugs ( 4) ................................... 60,000
Spark Plug Wires .................................. 60,000
Timing Belt ....................................... 60,000
( 1) - Inspect fluid every 15,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.
( 2) - Limited-slip differential.
( 3) - Replace oil filter at oil change if annual mileage is
less than 7500 miles.
( 4) - Use Platinum spark plugs only.









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REPLACEMENT INTERVALS TABLE (3000GT)








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Component Miles
Air Filter ........................................ 30,000
Automatic Transaxle Fluid ............................ ( 1)
Coolant ........................................... 30,000
Oil
Non-Turbo ......................................... 7500
Turbo ............................................. 5000
Oil Filter
Non-Turbo ....................................... 15,000
Turbo ........................................... 10,000
Spark Plugs
Except Platinum ................................. 30,000
Platinum ........................................ 60,000
Spark Plug Wires ( 2) .............................. 60,000
Timing Belt ....................................... 60,000
( 1) - Inspect fluid every 15,000 miles. Replace fluid if
evidence of contamination appears, after repairing
reason for contamination.
( 2) - Except vehicles equipped with Federal Emissions.









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BELT ADJUSTMENT TABLE








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( 1) Deflection ( 1) Deflection
Application New Belt - In. (mm) Used Belt - In. (mm\
)
Diamante
Generator & A/C .... .24-.28 (6.0-7.2) ....... .32-.37 (8.2-9.3\
)
P/S ................ .33-.37 (8.4-9.3) ..... .46-.52 (11.7-13.4\
)
Eclipse
2.0L Non-Turbo

than .010" (.25 mm) from tip. Chamfer sharp edge of reground valve
tip. Recheck valve stem installed height.
VALVE STEM OIL SEALS
Valve stem oil seals must be installed on valve stem. See
Fig. 2 . Seals are needed due to pressure differential at the ends of
valve guides. Atmospheric pressure above intake guide, combined with
manifold vacuum below guide, causes oil to be drawn into the cylinder.
Exhaust guides also have pressure differential created by
exhaust gas flowing past the guide, creating a low pressure area. This
low pressure area draws oil into the exhaust system.
Replacement (On Vehicle)
Mark rocker arm or overhead cam components for location.
Remove rocker arm components or overhead cam components. Components
must be installed in original location. Remove spark plugs. Valve stem
oil seals may be replaced by holding valves against seats using air
pressure.
Air pressure must be installed in cylinder using an adapter
for spark plug hole. An adapter can be constructed by welding air hose
connection to spark plug body with porcelain removed.
Install adapter in spark plug hole. Apply a minimum of 140
psi (9.8 kg/cm
) to adapter. Air pressure should hold valve closed. If
air pressure does not hold valve closed, check for damaged or bent
valve. Cylinder head must be removed for service.
Using valve spring compressor, compress valve springs. Remove
valve locks. Carefully release spring compressor. Remove retainer or
rotator and valve spring. Remove valve stem oil seal.
If oversized valves have been installed, oversized oil seals
must be used. Coat valve stem with engine oil. Install protective
sleeve over end of valve stem. Install new oil seal over valve stem
and seat on valve guide. Remove protective sleeve. Install spring
seat, valve spring and retainer or rotator. Compress spring and
install valve locks. Remove spring compressor. Ensure valve locks
are fully seated.
Install rocker arms or overhead cam components. Tighten all
bolts to specification. Adjust valves if required. Remove adapter.
Install spark plugs, valve cover and gasket.
VALVE SPRING INSTALLED HEIGHT
Valve spring installed height should be checked during
reassembly. Measure height from lower edge of valve spring to the
upper edge. DO NOT include valve spring seat or retainer. Distance
must be within specifications. If valves and/or seats have been
ground, a valve spring shim may be required to correct spring height.
See Fig. 12 .
Fig. 12: Measuring Valve Spring Installed Height - Typical
This Graphic For General Information Only

Idle Speed Control Actuator ............................... ISC
Mix Control Solenoid .............................. MC Solenoid
Secondary Air Injection System Management Device .... AIR, PAIR
Vacuum Regulator Solenoid .................................. ..
Waste Gate Control Solenoid ................................ ..









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SHROUDS, BAFFLES AND DEFLECTORS
SHROUD, BAFFLE AND DEFLECTOR INSPECTION








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Condition Code Procedure
Application incorrect,
affecting cooling system
performance ............ A . Require repair or replacement.
Attaching hardware
broken ................. A .. Require repair or replacement
of hardware.
Attaching hardware
missing ................ C ......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A .. Require repair or replacement
of hardware.
Bent, affecting cooling
system performance ..... A . Require repair or replacement.
Blocked, affecting cooling
system performance ..... A . Require repair or replacement.
Broken, affecting cooling
system performance ..... A . Require repair or replacement.
Cracked, affecting cooling
system performance ..... A . Require repair or replacement.
Loose, affecting cooling
system performance ..... A ................ Require repair.
Loose, not affecting
cooling system
performance ............ 2 ................ Suggest repair.
Missing, affecting cooling
system performance ..... C ........... Require replacement.









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SPARK PLUGS
NOTE: You are not required to replace spark plugs in sets.
However, you may suggest replacement of the other plugs
for preventive maintenance.
SPARK PLUG INSPECTION









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Condition Code Procedure
Application incorrect ... B ............ Require replacement.
Electrode eroded ........ 1 ............ Suggest replacement.
Fouled .................. A ........... ( 1) Require repair or
replacement.
Gap incorrect ........... B .. Require repair or replacement.
Insulation broken ....... A ............. Require replacement
Insulator cracked ....... A ............ Require replacement.
Leaking compression ..... A .. Require repair or replacement.
Maintenance interval .... 3 ............ Suggest replacement.
Threads damaged ......... A .. Require repair or replacement.
Threads stripped (threads

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Trailer Towing Or  Replace  Engine Oil  3,000 Mile (4800 KM) 

Police, Taxi Or    Or 3 Months 

Commercial Type \b
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Operation  Replace  Oil Filter  6,000 Mile (9600 KM) 

   Or 6 Months 

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 Replace  Spark Plugs  15,000 Mile (24,000 KM) 

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 Replace  Manual  30,000 Mile (48,000 KM) 

 Transmission  

  Oil  

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 Replace Transfer Oil  30,000 Mile (48,000 KM) 
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Extensive Idling  Replace  Engine Oil  3,000 Mile (4800 KM) 

Driving in Stop &    Or 3 Months 

Stop & Go Traffic    

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   Or 6 Months 
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Short-trip  Replace  Engine Oil  3,000 Mile (4800 KM) 

Operation at    Or 3 Months 

Freezing \b
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Temperatures  Replace  Oil Filter  6,000 Mile (9600 KM) 

(Engine not    Or 6 Months 

thoroughly warmed)\b
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Driving In  Replace  Air Cleaner  15,000 Mile (24,000 KM) 

Sandy Areas   Filter  
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Driving In  Inspect  Disc Brake  6,000 Mile (9,600 KM) 

Salty Areas   Pads  Or 6 Months 
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More than 50 %  Replace  Engine Oil  3,000 Mile (4800 KM) 

Operation in Heavy   Or 3 Months 

City Traffic Or \b
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At Sustained High  Replace  Oil Filter  6,000 Mile (9600 KM) 

Speeds During Hot    Or 6 Months 

Weather Above \b
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90 F (32 C)  Replace  Manual  30,000 Mile (48,000 KM) 

 Transmission  

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Driving On  Replace  Manual  30,000 Mile (48,000 KM) 

Off-Road  Transmission  

  Oil  

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(
1) - Perform these services at the mileage or number of months 

(since the last time), WHICHEVER COMES FIRST. 
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7,500 MILE (12,000 KM) NORMAL SERVICE
7,500 MILE (12,000 KM) NORMAL SERVICE

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 Drive Shaft Boots (
4) 
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 Exhaust System (
3) 
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7) 
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REPLACE 
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 Engine Oil (
1) 
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 Engine Oil Filter (
2) 
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9) 
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8) 
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 Air Cleaner Filter 
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(
1) - Change once a year or every 7,500 miles (12,000 KM). 

(
2) - If mileage is less than 7,500 miles (12,000 KM) each year, 

replace the oil filter at every oil change. 

(
3) - Or inspect every 2 years. 

(
4) - Or inspect every year. 

(
5) - Or change every 2 years. 

(
6) - Or lubricate grease every 2 years. 

(
7) - Or inspect every 5 years. 

(
8) - Or replace every 5 years. 

(
9) - For California & Massachusettes, this maintenance is 

recommended but not required. 
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LUBRICATION SPECIFICATIONS 
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Material  Condition  Specification 
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Engine Oil  Ambient Temperature Less Than SAE 5W-30 

(
1)  0F (-18C) To 100F (38C)  

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Ambient Temperature Above 0F  SAE 10W-30 

 (-18C) To Over 100F (38C)  
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Engine  All  50/50 Mixture Of 

Coolant   Distilled Water & 

  Ethylene Glycol 
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Manual  All API Classification GL-4

Transmission   SAE 75W-85W Or 75W-90 
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Automatic  All  "ATF DEXRON II" Or 

Transmission   Equivalent 
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Brake Fluid  All  DOT 3 Or DOT 4 
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Rear Axle  All API Classification GL-5

  Or Higher (
2) 

  Engine Coolant 
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1) - Change once a year or every 7,500 miles (12,000 KM). 

(
2) - If mileage is less than 7,500 miles (12,000 KM) each year, 

replace the oil filter at every oil change. 

(
3) - Or inspect every 2 years. 

(
4) - Or inspect every year. 

(
5) - Or change every 2 years. 

(
6) - Or lubricate grease every 2 years. 

(
7) - Or inspect every 5 years. 

(
8) - Or replace every 5 years. 

(
9) - For California & Massachusettes, this maintenance is 

recommended but not required. 
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LUBRICATION SPECIFICATIONS 
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Material  Condition  Specification 
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(
1)  0F (-18C) To 100F (38C)  

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 (-18C) To Over 100F (38C)  
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Engine  All  50/50 Mixture Of 

Coolant   Distilled Water & 

  Ethylene Glycol 
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Transmission   SAE 75W-85W Or 75W-90 
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Transmission   Equivalent 
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  Or Higher (
2) 
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Transfer Case All API Classification GL-4

  SAE 75W-85W Or 75W-90 
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(
1) - SAE 5W-30 engine oil is preferred. SAE 10W-30 may be used if 

the Ambient Temperature is above 0 F (-18 C). 

(
2) - SAE90, 85W-90, 80W-90 may be used in temperatures above 

-10 F (-23 C). SAE 80W, 80W-90 may be used in temperatures 

from -30 F (-34 C) to -10 F (-23 C). SAE 75W may be used 

in temperatures below -30 F (-34 C). 
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FLUID CAPACITIES 
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Incorrect ignition timing Reset ignition timing,
See TUNE-UP
Leaking valves Replace valves, See
ENGINES
Worn fuel pump diaphragm Replace diaphragm or
or piston piston









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Intake Backfire Improper ignition timing Reset ignition timing,
See TUNE-UP
Faulty accelerator pump Replace accelerator
discharge pump
Improper choke operation Check choke and adjust
as required
Defective EGR valve Replace EGR valve
Fuel mixture too lean Reset air/fuel mixture,
See TUNE-UP
Choke valve initial Reset choke valve
clearance too large initial clearance









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Exhaust Backfire Vacuum leak Inspect and repair
vacuum system
Faulty vacuum diverter Replace vacuum diverter
valve valve
Faulty choke operation Check choke and adjust
as required
Exhaust system leak repair exhaust system
leak









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Engine Ignition timing too far Reset ignition timing,
Detonation advanced See TUNE-UP
Faulty ignition system Check ignition timing,
See TUNE-UP
Spark plugs loose or Retighten or replace
faulty plugs
Fuel delivery system Inspect lines, pump and
clogged filter for clog
EGR valve inoperative Replace EGR valve
PCV system inoperative Inspect and/or replace
hoses or valve
Vacuum leaks Check vacuum system and
repair leaks
Excessive combustion
chamber deposits Remove built-up
deposits
Leaking, sticking or Inspect and/or replace
broken valves valves









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External Oil Fuel pump improperly seated Remove pump, replace
Leakage or worn gasket gasket and seat
properly
Oil pan gasket broken or Straighten pan and
pan bent replace gasket
Timing chain cover gasket Replace timing chain
broken cover gasket
Rear main oil seal worn Replace rear main oil
seal
Oil pan drain plug not Remove and reinstall
seated properly drain plug
Camshaft bearing drain Remove restriction
hole blocked
Oil pressure sending Remove and reinstall
switch leaking sending switch









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Excessive cylinder wear Rebore or replace
block
Excessive valve guide Worn or loose bearing
clearance









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Gap Bridged Deposits in combustion Clean combustion
chamber becoming fused chamber of deposits
to electrode









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Blistered Engine overheating Check cooling system
Electrode
Wrong type of fuel Replace with correct
fuel
Loose spark plugs Retighten spark plugs
Over-advanced ignition Reset ignition timing
timing see ENGINE PERFORMANCE









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Pre-Ignition or Incorrect type of fuel Replace with correct
Melted Electrodes fuel
Incorrect ignition timing Reset ignition timing
see ENGINE PERFORMANCE
Burned valves Replace valves
Engine Overheating Check cooling system
Wrong type of spark plug, Replace with correct
too hot spark plug, see
ENGINE PERFORMANCE









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Chipped Severe detonation Check for over-
Insulators advanced timing or
combustion
Improper gapping Re-gap spark plugs
procedure









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Rust Colored Additives in unleaded Try different fuel
Deposits fuel brand









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Water In Combus- Blown head gasket or Repair or replace
tion Chamber cracked head head or head gasket









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NOTE: Before diagnosing an electronic ignition system, ensure that
all wiring is connected properly between distributor, wiring
connector and spark plugs. Ignition problem will show up
either as: Engine Will Not Start or Engine Runs Rough.
BASIC ELECTRONIC IGNITION TROUBLE SHOOTING CHARTS









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CONDITION POSSIBLE CAUSE CORRECTION








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Engine Won't Open circuit between Repair circuit
Start distributor and bulkhead
connector
Open circuit between Repair circuit
bulkhead connector and