What you should know about glow plugs

Most people have heard the word spark plug at some time or other in their life. Many car owners replaced the spark plugs themselves, when engine designs were less complicated. So far, so good. But honestly: have you ever heard of a glow plug?

Maybe you even know that glow plugs are used in diesel engines. But could you explain their function and what happens when they are defective? It can be very uncomfortable for the owner of a diesel automobile in the winter if the glow plugs do not function properly – not to mention the impact on the environment.

Below you will find everything you should know about glow plugs. In a nutshell.