How to Replace Spark Plugs

Below guide will teach you How to Replace Spark Plugs . Please follow the instructions carefully.

Things You’ll Need:

  • Spark Plug Boot Removal Tool
  • Spark Plug Gapper
  • Spark Plug Socket Set
  • 3/8 in. Drive 6 in. Socket Extension
  • 3/8 in. Drive Ratchet
  • Spark Plug

Estimated Costs:

  • DIY Costs: Est. $7.83 parts only
  • Shop Costs: Est. $127.82 parts and labor


  • Secure the vehicle on a flat surface and wait until the engine cools down.
  • Prop the engine hood up and look for the spark plug wires.
  • Disconnect the spark plug wire boot from the spark plug terminal. Hold the boot with plug wire removal tool so that the plug wire and the boot don’t get separate from each other.
  • With the help of spark plug socket, extension or ratchet take the spark plug out of the cylinder head.
  • Take the new spark plug and inspect the gap on it. If required, tune the spark plug gap according to the vehicle’s specifications.
  • Thread in the new spark plug into spark plug hole. You can use 1/4 inch rubber hose, if threaded hole is difficult to get at.
  • Reconnect the spark plug wire.
  • Replace the other spark plugs in the same way. To avoid confusion, deal with one spark plug at a time.

Further Reading

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