We may receive a commission on purchases made from links. The glow plugs in a diesel are like the spark plugs in a gasoline engine, but they function differently. The only similarities between glow ...

We may receive a commission on purchases made from links. Over the last century or so, the auto industry has changed in a myriad of incredible ways. It's mind-boggling to think of just how far we've ...

Diesel engines run on fuel that’s much thicker than gas, adding to the difficulty of cold-weather starts. To aid combustion, small electric heaters called glow plugs warm pre-combustion or combustion ...