check engine MITSUBISHI ECLIPSE 2012 4.G Service Manual

7-32 Vehicle care and maintenance
7
NOTE
To 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
N00940900039
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”.
Your vehicle may be equipped with iridium tipped spark plugs,
which are identified by marks on the ceramic. They do not
require replacement as frequently as the conventional type
spare plug and will last much longer.NOTE
Use the spark plugs listed under “Engine specifications”
on page 9-7 or plugs that are exactly the same. Other
plugs could cause engine damage, performance problems
or radio noise.
Fuel hoses
N00941000037
Check the hose surfaces for any heat and mechanical damage,
hard and brittle rubber, cracking, tears, cuts and abrasions. Pay
special attention to the hoses closest to high heat sources such
as the exhaust manifold. Check all the hose connections, such
as clamps and couplings, to make sure they are secure and that
there are no leaks. If you see any wear or damage, replace the
hoses immediately.Fuel system (tank, pipe line and connection, and
fuel tank filler cap)
N00941300085
Check these regularly for damage or leaks in the fuel lines and
connections. Check the fuel tank filler cap for damage or loose-
ness. Pay special attention to the fuel lines closest to high heat
sources such as the exhaust manifold.
WA R N I N G
!
If you see a fuel leak or if you smell fuel, do not run
the engine. Any spark (including from the ignition),
flame or smoking material could cause an explosion
or fire. Call an authorized Mitsubishi Motors dealer
or a repair facility of your choice for assistance.
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7-34 Vehicle care and maintenance
7
Ball joint, steering linkage seals and drive shaft
boots
N00941800077
Check the following parts for damage and grease leaks:

Ball joint boots of the front suspension and steering link-
age

Bellows on both ends of the drive shaftDrive belt (for generator, power steering pump,
air conditioning compressor)
N00941900124
2.4 liter modelsCheck the tension of the drive belt. Make certain that the indi-
cator (A) is between the specified lines as shown in the illustra-
tion.
Check the drive belt for cuts and cracks, and replace it if it is
damaged. When replacing the belt, make sure that there is no
interference between the belt and other engine components.
After replacing, recheck the tension to make sure the indicator
(A) is between the specified lines.
WA R N I N G
!
Do not check or touch the drive belt with the engine
running, or serious injury or death may result.2.4 liter
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Vehicle care and maintenance
7-35
7
3.8 liter modelsCheck the tension of the drive belt. The deflection must be
within specifications, when pressed at a point halfway between
the pulleys as shown in the illustration with a force of about 22
pounds (100N).
Check the drive belt for cuts and cracks, and replace it if it is
damaged.
When replacing the belt with a new belt, make sure that there is
no interference between the belt and other engine components.
Then, check the tension of the belt at the designated point. The
deflection must be within the specifications.
Amount of belt deflection
1- Power steering pump pulley
2- Crank shaft pulley
3- Generator pulley
4- Air conditioning pulley3.8 liter
Standard value
Used belt
New belt
A.48 to .64 inch
(12.3 to 16.2 mm).52 to .59 inch
(13.2 to 15.1 mm).38 to .48 inch
(9.6 to 12.3 mm)B.33 to .42 inch
(8.4 to 10.7 mm).35 to .40 inch
(8.9 to 10.1 mm).24 to .30 inch
(6.2 to 7.5 mm)
WA R N I N G
!
Do not check or touch the drive belt with the engine
running, or serious injury or death may result.
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7-36 Vehicle care and maintenance
7
Exhaust system
N00942200078
The best way to keep carbon monoxide gas from entering
inside your vehicle is to have the engine exhaust system prop-
erly serviced.
Have a competent mechanic inspect the complete exhaust sys-
tem and nearby body areas for broken, damaged, deteriorated,
or mispositioned parts if you notice any of the following:

A change in the sound of the exhaust system

The smell of exhaust fumes inside the vehicle

The underside or rear of the vehicle is damaged
Also check the exhaust system each time the vehicle is raised
for lubrication, oil changes, or required service. Any open
seams or loose connections could let dangerous exhaust fumes
seep into the cargo area and passenger compartments. Check for any of the following conditions:
Check for holes or exhaust gas leaks caused by corrosion
or damage.

Check the joints and connections for looseness or exhaust
gas leaks.

Check the rubber hangers and brackets for damage.
Timing belt
N00942300053
The timing belt should be replaced with a new one at the mile-
age listed in the “WARRANTY AND MAINTENANCE
MANUAL”.Hood lock release mechanism and safety catch
N00942500042
The hood lock release mechanism and hood safety catch should
be checked, cleaned, and oiled when needed for easy move-
ment and to stop rust and wear. Use Multipurpose Grease
NLGI Grade 2 sparingly for all sliding parts of the hood latch
and release lever. Work the grease into the hood lock mecha-
nism until all the movable surfaces are covered.
Also, put a light coat of the same grease on the safety catch
wherever moving parts touch.
WA R N I N G
!
Carbon monoxide gas from your vehicle’s exhaust is
poisonous. Breathing these fumes can cause uncon-
sciousness or death.
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7-74 Vehicle care and maintenance
7
During cold weather Salt and other chemicals spread on winter roads in some geo-
graphical areas can have a detrimental effect on the vehicle
underbody. You should flush the underbody with a high pres-
sure hose every time you wash the outside of your vehicle.
Take special care to remove mud or other debris which could
trap and hold salt and moisture.
After washing your vehicle, wipe off all waterdrops from the
rubber parts around the doors to prevent the doors from freez-
ing.NOTE
When the door is frozen, opening it by force may tear off
or crack the rubber gasket installed around the door. Pour
warm water to melt the ice. Be sure to thoroughly wipe off
the water after opening the door. To prevent freezing of
the weatherstripping on the doors, hood, etc., treat with
silicone lubricant.
CAUTION
!
When washing the underside of your vehicle or the
wheels, wear a pair of rubber gloves to protect your
hands.
Never spray or splash water on the electrical parts
in the engine compartment. This may damage them.
Be careful also when washing the underbody. Do not
spray water into the engine compartment.
Avoid automatic car washers that use rotating
brushes. These brushes may scratch the paint sur-
face and make it dull.
Scratches are more noticeable on darker colored
vehicles.
Some hot water washing equipment uses high pres-
sure and heat to clean your vehicle. This heated
water may damage your vehicle’s resin parts. It can
flood the interior of the vehicle. Therefore, be sure
of the following:
• Keep the washing nozzle at least 20 inches (50 cm)
away from the vehicle body.
• When washing around the door glass, hold the
nozzle at a distance of more than 20 inches (50 cm)
and at right angles to the glass surface.
• It is recommended that the water should be
sprayed at a 45° angle to the side windows and top
seals. (ECLIPSE SPYDER only)

Make sure to do the following when using an auto-
matic car wash, with help from either this manual or
the car wash operator, to avoid damaging your vehi-
cle:
• Fold the outside rearview mirrors.
• Remove the antenna.
• Tape or remove the rear wiper arm assembly.
(ECLIPSE only)
• As your vehicle is equipped with rear spoiler,
check with the car wash operator before using the
car wash.CAUTION
!
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