We may receive a commission on purchases made from links. The glow plugs in a diesel are like the spark plugs in a gasoline ...

Diesel engines ignite the air/fuel mixture with heat generated by friction and compression, while gasoline engines use the heat caused by a spark from a spark plug. That's why diesel engines are ...

The odds are pretty good that your car doesn’t have glow plugs. Spark plugs, probably, but glow plugs are pretty much for diesels only—they’re used to introduce heat to the combustion chamber in ...