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 ...

If you ever want to start a heated group discussion in a group of auto gear-head DIYers, simply ask what’s the best spark plug to use? As many opinions and reasons will start flying, as if you asked ...

It seems as if spark plug wires are always in the way. If they're not cooking themselves on a header tube, they're contributing to that errant misfire that took you half a day to track down! As long ...