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Why should I replace my spark plugs?

Ever try to start your vehicle and it just keeps cranking, but will not fire? This could be caused by old, worn spark plugs. This brings us to the two questions we will cover today: why should I replace my spark plugs and how often should I replace them.

  • How often should I replace my spark plugs?
  • Check the owners manual (range from 30,000 to 120,000 miles)
  • Pull a spark plug and inspect the condition
  • If your vehicle idles a lot change the plugs more often
  • Be on the preventative side: replace them before they are due

Why should I replace my spark plugs? Several reasons you want to replace your spark plugs:

  • Prevents clogging of the catalytic converter(s)
  • Helps fuel economy
  • Helps prevent unnecessary wear on the starter, fuel pump and other components needed to start the vehicle

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