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 ...

[This story originally appeared in the September 2004 issue of MotorTrend with the headline "Moving Mountains."] Sometime during the night of September 29, 1913, Rudolph Diesel, 55 years old, roughly ...