Spark plug gapping may sound like one of those old-timey chores, like setting breaker points in a distributor or lubricating the frame, but having the proper spark plugs and ensuring they're properly ...

Spark plugs may be small, but they’re the heartbeat of your engine’s performance. Choosing the right type, setting the correct gap, and installing them properly can mean smoother starts, better fuel ...

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 ...