We earn commissions from purchases you make using links in our articles. Learn more. You’re likely aware that in order to keep your vehicle running in great shape, you’ll need to replace the spark ...

Have you ever put much thought into the specifics of your car's ignition system-above and beyond the simple fact of whether it's working or not, that is? More specifically, how about those spark plug ...

Spark plugs that haven't been changed for a long time can become one with the cylinder head. Fortunately, it's possible to repair damaged threads instead of scrapping the head. (Photograph by Chris ...