Dynasty L4-153 2.5L SOHC VIN K TBI (1992)
Possible Causes:
^ On one or two plugs, may be caused by sticking valves or defective spark plug cables.
^ On the entire set, may be caused by a clogged air cleaner.
^ Poor Ignition Output
Note:
Cold fouling is normal when the vehicle is only operated for short periods. The spark plugs do not reach a high enough operating temperature
during short operating periods to burn fuel completely.
Electrode Gap Bridging
Electrode Gap Bridging
Symptoms: Gap between the electrodes bridged by deposits.
Possible Causes:
^ Loose deposits in the combustion chamber can accumulate on the spark plug electrodes during continuous stop and-go driving. Then when
the engine is suddenly subjected to a high torque load, the deposits partially liquefy and bridge the gap between the electrodes, short
circuiting the electrodes.
Note:
Spark plugs with electrode gap bridging can be cleaned using standard procedures.
Heavy Colored Deposits
DESCRIPTION:
Colored coatings heavily deposited on the portion of the plug projecting into the chamber and on the side facing the intake valve.
POSSIBLE CAUSE
ACTION
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Leaking Valve Seals (1 or 2 cylinders)
- Check the valve seals. Replace if necessary. Clean, regap, and reinstall
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Oil or Ash Encrusted
OIL OR ASH ENCRUSTED
