Glow plugs are small heating elements located in the engine's combustion chambers. Their purpose is to pre-heat the air in the combustion chamber before the fuel is injected, helping the engine to start more easily and run more efficiently.
When a glow plug fails, it can prevent the engine from starting properly or can cause it to run rough. In some cases, a faulty glow plug can also cause the Check Engine Light to turn on.
The Check Engine Light is a diagnostic tool that indicates a problem with the vehicle's engine or emission control system. When the Check Engine Light comes on, it is important to take the vehicle to a mechanic to have it diagnosed.
In the case of a faulty glow plug, the mechanic will need to remove the glow plug from the engine and test it. If the glow plug is found to be faulty, the mechanic will replace it with a new one. Once the faulty glow plug has been replaced, the Check Engine Light should turn off.
