Add Yahoo as a preferred source to see more of our stories on Google. When an air-fuel charge burns inside an engine's cylinder, some of the heat that is produced gets absorbed by the spark plug. The ...

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 ...

A: A spark plug’s heat range is critical to correct operation. The different characteristics of automotive engines in regard to compression, rpm, fuel octane rating and cooling ability make it ...

Fitting bigger spark plugs might sound like a recipe for improving power output, but it can have catastrophic consequences for your engine.

If you consider your spark plugs little more than disposable engine parts to be replaced for every event or two, you're missing out on a valuable engine-tuning tool. Not only can the correct plug ...

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 ...

Weichai Power has developed a spark plug heat rating measurement method and system using spark discharge current for precise evaluation. By controlling discharge current and measuring temperature ...

The spark plug in your car and a spark plug on a boat have the same job, but perform it in very different environments. Here's how marine spark plugs stay dry.