In 1860 Étienne Lenoir used an electric spark plug in his gas engine, the first internal combustion piston engine. Lenoir is generally credited with the invention of the spark plug.

What Are Spark Plugs? Spark plugs are small electrical devices used in some internal combustion engines and are prevalent in the function of your vehicle’s engine. They feature an insulated …

Dec 9, 2025 · Learn about spark plugs, from how they function to when they need replacement. Get tips on spotting issues early to keep your engine performing at its best.

Mar 12, 2025 · Spark plugs are one of the most important parts that ensure the operation of the engine. The quality of ignition of the fuel-air mixture depends on the condition of spark plugs, …

Dec 28, 2025 · Here are a few spark plug tips and tricks to help you with your project, including plug gap information and how to use spark plug gels.

Learn more about spark plug types and the benefits of copper, platinum, and iridium spark plugs with this guide from O'Reilly Auto Parts.

Oct 8, 2024 · Know when to change spark plugs in your vehicle and learn how to change your spark plugs to maintain peak performance and high gas mileage.

May 23, 2025 · A Spark Plug also called a Sparking Plug, device that fits into the cylinder head of an internal-combustion engine and carries two electrodes separated by an air gap, across …

With the battery as the power source, the spark plug converts the electrical energy that comes through the ignition coil and distributor into a spark which ignites the fuel air mixture.

May 30, 2025 · Connected to your ignition coil, the spark plug receives high-voltage electricity and creates a spark across a small gap at the tip of the plug. That spark ignites the air-fuel mixture …