Spark Plugs - Mitsubishi Stealth 1994 Import Service Manual

LUBRICATION AND MAINTENANCE - Maintenance Service
Correct
Incorrect
4. EVAPORATIVE EMISSION CONTROL SYSTEM
(Check for leaks and clogging)
1. If the fuel-vapor vent line is clogged or damaged, a fuel
vapor mixture escapes into the atmosphere causing exces-
sive emissions. Disconnect the line at both ends, and blow
it clean with compressed air. Remove the fuel tank filler
tube cap from the fuel tank filler tube and check to see if
there is evidence that the packing makes improper contact
to the fuel tank filler tube.
2. The fuel tank pressure control valve installed on the vapor
line should be checked for correct operation.
5. SPARK PLUGS (Replace)
The spark plugs must fire properly to assure proper engine
performance and emission-control.
Therefore, they should be replaced periodically with new ones.
Spark plug gap: 1.0 - 1.1 mm (.039 - .043 in.)
NOTE
For the platinum plug, use care not to damage the platinum
tip. Never try to adjust the plug gap.
Spark plug
(2) Install the spark plug and tighten to 25 Nm (15 ft.lbs.)
6. IGNITION CABLES (Replace)
The ignition cables should be replaced periodically with new
ones.
After replacing, make sure that the ignition cables and
terminals are properly connected and full seated.
NOTE
When disconnecting an ignition cable alone, an open circuit
might result.
7. DISTRIBUTOR CAP AND ROTOR (Check)
Check the distributor cap and rotor to maintain driveability and
good exhaust gas.
DISTRIBUTOR CAP AND ROTOR INSPECTION
Inspect in accordance with the following procedure. Repair or
replace as necessary.
Check the cap for cracks.
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Check the cap and rotor electrodes for damage.
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Wipe clean the cap and rotor.
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