Page 580 of 700

Vehicle care and maintenance
7-3
7 Catalytic converter
N00937400131
The catalytic converter requires you to use unleaded fuel only.
Leaded gasoline will destroy the emission-control effective-
ness of the converter.
Normally, the catalytic converter does not require maintenance.
However, it is important to keep the engine properly tuned for
the converter to continue to work properly. To reduce the possibility of catalytic converter damage:
Use UNLEADED GASOLINE ONLY of the type of rec-
ommended in “Fuel selection”.
Do not drive with an extremely low fuel level. Running
out of gas could damage the catalytic converter.
Do not try to start the engine by pushing or towing the
vehicle. If the battery is weak or run down, use jumper
cables to properly start the engine.
Do not idle the engine with any spark plug wires discon-
nected or removed, such as when performing diagnostic
tests.
Do not idle the engine for a long time if it is idling
roughly or otherwise obviously malfunctioning.
To prevent the catalytic converter from being damaged
from unburned gas, do not race the engine when turning
off the ignition switch.
Stop driving the vehicle if you think the performance is
less than normal, the engine is running oddly or there is
any other engine trouble, such as with the ignition, etc. If
you are not able to stop driving immediately, slow down
and drive for only a short time. Have an inspection made
by an authorized Mitsubishi Motors dealer or a repair
facility of your choice as soon as possible.
In unusual situations involving major engine problems, a
burning odor may indicate severe and abnormal catalytic
converter overheating. If this occurs, stop in a safe place,
shut the engine off and let the vehicle cool. Once the
engine is cool, immediately take your vehicle to a dealer
or a repair facility of your choice for service.
CAUTION
!Damage to the catalytic converter can result if your
vehicle is not kept in proper operating condition. If
the engine malfunctions or misfires, or if your vehi-
cle performance suffers, have it serviced promptly.
Running your vehicle when it is overheated may
result in damage to the converter and vehicle.
WA R N I N G
!Do not park or run your vehicle in areas where com-
bustible materials such as dry grass or leaves can
come in contact with a hot exhaust, since a fire could
occur.Do not put undercoat paint on the catalytic con-
verter.
BK0119300US.book 3 ページ 2010年5月21日 金曜日 午前10時13分
Page 618 of 700

Vehicle care and maintenance
7-41
7
NOTETo meet government regulations and promote cleaner air,
your vehicle is equipped with an onboard diagnostic sys-
tem (OBD). The engine electronic control module that
controls OBD functions stores various data (especially
about the exhaust emissions). This data will be erased if
the battery cable is disconnected, which could make a
rapid diagnosis difficult. Do not disconnect the battery
cable when the engine malfunction indicator (“SERVICE
ENGINE SOON” or “Check engine light”) is on.
Spark plugs
N00940900215
Spark plugs must fire properly for good engine performance
and emission-control.
Do not reuse them by cleaning or regapping. Change them at
the mileage listed in the “WARRANTY AND MAINTE-
NANCE MANUAL”. NOTEUse the spark plugs listed under “Engine specifications”
on page 9-8 or plugs that are exactly the same. Other
plugs could cause engine damage, performance problems
or radio noise.
BK0119300US.book 41 ページ 2010年5月21日 金曜日 午前10時13分
Page 687 of 700
9-8 Specifications
9Engine specifications
N01147700439
Item
2.0 liter
2.4 liter
Except for vehicles with tur-
bocharger
Vehicles with turbocharger
Engine model 4B11 4B12Engine displacement 121.9 CID (1,998 cm³) 144.0 CID (2,360 cm³)No. of cylinders and cylinder arrange-
ment4 in-lineBore 3.39 in (86.0 mm) 3.46 in (88.0 mm)Stroke 3.39 in (86.0 mm) 3.82 in (97.0 mm)Compression ratio 10.0 9.0 10.5Thermostat valve opening temperature 189 °F (87 °C) 180 °F (82 °C) 189 °F (87 °C)Spark plugs
NGK DIFR6C11 DILKR7B6 DIFR5C11
Spark plug gap.040 to .043 in
(1.0 to 1.1 mm).020 to .023 in
(0.5 to 0.6 mm).040 to .043 in
(1.0 to 1.1 mm)Firing order 1-3-4-2BK0119300US.book 8 ページ 2010年5月21日 金曜日 午前10時13分
Page 697 of 700

Alphabetical index
6Seat 2-2
Arm rest 2-9
Front seats 2-3
Heated seats 2-7
Rear seats 2-8
Seats and restraint systems 2-3
Seat belt 2-14
Adjustable seat belt shoulder anchor 2-20
Child restraint 2-24
Driver’s seat belt reminder/warning 2-18
Force limiter 2-23
Front passenger seat belt warning light 2-19
Maintenance and inspection 2-34
Pre-tensioner 2-22
Seat belt extender 2-21
Seat belt instructions 2-15
Seat belt use during pregnancy 2-21
Service brake 3-136
Service precautions 7-2
Snow tires 7-37
Spark plugs 7-41
Steering
Power steering fluid 7-22
,9-11
Tilt lock lever 3-80
Wheel lock 3-31
,3-88
Storage spaces 3-284
Front console boxes 3-287
Sun visors 3-275
Supplemental Restraint System 2-35How the Supplement Restraint System works 2-39
Servicing 2-59
Warning light/display 2-44
T
Tank capacity 1-5
,9-11
Theft-alarm system
System 3-64
Tire pressure monitoring system 3-159
Warning light/display 3-160
Tires 7-29
How to change a tire 6-9
Inflation pressure 7-32
Maintenance 7-34
Quality grading 8-2
Replacing tires and wheels 7-34
Rotation 7-35
Size (tire and wheel) 9-10
Snow tires 7-37
Tire and loading information placard 4-9
,9-4
Tire chains 7-37
Tread wear indicators 7-35
Tissue holder 3-288
Tools 6-7
Storage 6-7
Towing 6-22
Trailer towing 4-13
Transfer oil 7-19
Trunk area light
BK0119300US.book 6 ページ 2010年5月21日 金曜日 午前10時13分