Spark plugs are necessary for gas-powered engines. However, they're not all the same, and they can come in different shapes and sizes. Here's why that is.

My question is about spark plug reach. I recently removed my intake, and while looking at one valve that was near max lift, I could see the electrode was at least 1/8 inch in the threaded hole. I ...

A spark plug is an electrical device that fits into the cylinder head of some internal combustion engines and ignites compressed aerosol gasoline by means of an electric spark. Spark plugs have an ...

Spark plugs are essential for gas-powered engines. However, they're not all created equal. Here's what can happen if you use ...