If you have a diesel engine, this component helps you start the engine in cold temperatures.

Diesel engines can be notoriously hard to start in colder temperatures, mostly due to the heavy-duty components in the combustion chamber. A glowplug is a small, metal rod with a heating element at the end that directly ignites the first spray of fuel to kickstart the engine.

Asked by Don Ayres · Last updated 5 years ago · 1.2M views · SOURCE