Have you ever wondered why you need to add oil to your chainsaw’s fuel supply? Or why some dirt bikes have a higher pitched exhaust note than others? We’ve all been burdened with yard work or been ...

There are two basic differences between 2 stroke and 4 stroke motors. One has to do with how many strokes it takes a piston to complete an engine cycle (more on that below). The other has to do with ...

Detroit Diesel’s two-stroke engines earned their “Screaming Jimmy” nickname the hard way, with a piercing exhaust note and relentless mechanical clatter that turned work sites, logging roads, and ...

Every new internal combustion car and truck sold in America today is equipped with a four-stroke engine, as are the vast majority of motorcycles. Today, if you hear the loud, ringing song of a ...

As we begin the last article in this series on the basics of the internal combustion engine, let's stop to review what we've covered during the last five articles. We began last May by detailIing the ...

Ahh, two-stroke engines. Many people associate the sound (and smell) of a two-stroke with yard equipment, but for motorcycle fans, it signifies something else entirely – performance. See, before ...