Gasoline internal combustion engines need three fundamental things: fuel, oxygen, and spark. The sexy aspects of modifying cars are focused on the first two elements: Double Pumper carburetors, ...

Read a good spark plug lately? We hope so, for your engine's sake. But spark plug reading—the traditional way to check your fuel mixture and monitor other vital conditions in the combustion chamber ...

Q. What is the purpose for the heat range of a spark plug? This question came up with me and my neighbor. J.K., Pittsburgh A. No need for a heated debate. First, “heat range” has nothing to do with ...

Today, spark plugs are pretty easy to forget. In new Corvettes, theyseem to last forever. That wasn't the case years ago and, frankly, sparkplugs are often critical when it comes to performance and ...

A conventional spark plug and a spark plug with smaller electrodes were studied in M. I.T.'s transparent square piston engine. The purpose was to learn more about how the electrode geometry affects ...