Spark Plugs - Mitsubishi LANCER Owner's Manual

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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

Spark plugs must fire properly for good engine performance

and emission-control.

Iridium tipped type

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.

Use 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.

Vehicle care and maintenance

N00940900198

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