• How does a spark plug work
  • When to change aircraft spark plugs
  • How to change your aircraft’s spark plugs
  • How to clean your aircraft’s spark plugs
  • How to gap your aircraft’s spark plugs
  • How to reinstall your aircraft’s spark plugs

When to Change Your Aircraft’s Spark Plugs

  • Bent electrodes
  • Carbon deposits
  • Damaged ceramic insulators
  • Oil fouling
  • Lead buildup on electrodes

How to Change Your Aircraft’s Spark Plugs

Cleaning the Aircraft’s Spark Plugs

Gapping the Aircraft’s Spark Plugs

  • Using a cheap automotive gapping tool
  • Using needle-nose pliers to close the gap

Reinstalling the Aircraft’s Spark Plugs

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