Autozone's guides show you.

Webreplacing worn spark plugs can greatly improve your engine’s performance and efficiency, and it can be done at home with basic hand tools.

Webreplacing worn spark plugs can greatly improve your engine's performance and efficiency.

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Before replacing the coil, add a dab of dielectric grease to the tip prior to installing it over the spark plug terminal.

Webspark plugs are the heart of your vehicle's engine.

Weba little dab'll do ya.

How to Test a Spark Plug - AutoZone

Learn how spark plugs work and how to work on them.

For maximum fuel economy and peak engine performance, your spark plugs should be replaced every 30 months or 30,000.

Plug it back in to the ignition.

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