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Why do Spark plugs burn out?

Updated: 12/9/2022
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Wiki User

16y ago

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Spark plugs don't really burn out, they foul out. A spark plug is used to ignite the fuel/air mixture squirted into the cylinder by the fuel injector. The plug sends a spark and boom small explosion. However gasoline is not 100% clean, so it leaves carbon deposits on the plug. Over time these deposits foul the plug.

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16y ago
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Q: Why do Spark plugs burn out?
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