Although the definition of spark-plug gap is intuitive for those who know what plugs are, we feel an explanation is good and necessary information for rookies, and a solid refresher for the OGs.

Looking on how to change spark plugs? Check out The Drive’s expert guide to help you on how to change spark plugs.

However, when it is time to replace your spark plugs, you can't use just any tool to complete the job — you'll need a special device known as a spark plug socket.