Daytona IROC V6-181 3.0L SOHC VIN 3 FI (1992)
Spark Plug: Testing and Inspection
Dry, Fluffy Black Deposits - Cold or Carbon Fouling
Normal Operation And Carbon Fouling
Symptoms: Dry, black deposits on the electrodes.
Possible Causes:
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On one or two plugs, may be caused by sticking valves or defective spark plug cables.
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On the entire set, may be caused by a clogged air cleaner.
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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.