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 ...

You replace your spark plugs fairly often, so it's important to know which ones are superior. Many car owners take the mighty spark plug for granted. It’s a simple yet crucial device that’s ...

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 ...