Car Question: What are the color indications of spark plugs in vehicle engines? - Qs and As

Answer:

  • Brown tip of a vehicle sparkplug indicates the engine is running efficiently
  • Black indicates the engine is burning too much fuel..
  • White color indicates the engine is running lean; not burning enough fuel and can lead to overheating..

    * Consult a professional auto mechanic for more on spark plugs..



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