In racing, spark plugs are practically a disposable commodity. Use them for a while and throw them away. If the engine starts acting funny, replace the plugs just in case. It's cheap insurance and ...

If you've decided that you can get at your spark plugs without damaging your vehicle, assemble the items you need before you begin: Never change just a few plugs; it's all or nothing for even engine ...

It's always a good idea to have an emergency road kit when traveling. If you don't have a portable spark plug socket set, ...

We earn commissions from purchases you make using links in our articles. Learn more. You don't have to pay a mechanic to change your spark plugs. Giving your engine fresh spark plugs should be part of ...

We may receive a commission on purchases made from links. When it comes to engine care 101, a spark plug replacement — also referred to as a tune-up — is an essential task. Spark plugs, as the name ...

Gas-powered internal combustion engines need spark plugs to (literally) ignite and complete the combustion stroke, enabling the motor to produce power. They may seem unusual to the untrained eye, but ...

Modifying your spark plugs by "side gapping" is a legendary tuner trick. Does it actually boost horsepower, or is it just a ...

DEAR CAR TALK: I just changed the spark plugs and the coil bar on my 2014 Chevy Sonic. The engine starts but won't go over 3,000 rpms. Did I do something incorrectly? - Max RAY: I'm going to put my ...