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  • it is mostly used in aerospace, it is highly fuel resistant and high
  • Other maintenance factors, such as insufficient lubrication inside the engine.
  • In conclusion, black spark plugs are a common issue that can be caused by a variety of factors, including a rich air-fuel mixture, oil leaks, and ignition system problems. Regular maintenance and inspection of spark plugs are essential for keeping the engine running smoothly and efficiently. By addressing black spark plugs promptly, you can prevent more serious problems down the road and ensure that your vehicle continues to perform at its best.
  • Figure 1: Types of sealing devices