When you find yourself in the market for a new vehicle, you may have to pick between a diesel- or gas-powered car. As a fuel, diesel may be a little more expensive than gas, but it comes with a host ...

Boiling with rage because a small engine just won’t fire up? In the first of a two-part series, Andrew Pearce and Stihl’s technical services trainer Mark Hellewell offer basic troubleshooting tips.

For hot rodders, spark plugs are often nothing more than inspection tools that reveal whether an engine is running too rich, too lean, or just right. Street guys look for a nice tannish-brown tint on ...