Testing a spark plug with a multimeter is a straightforward course of that may show you how to decide if the spark plug is functioning correctly. A spark plug is a small however essential a part of an engine that’s answerable for igniting the air-fuel combination within the combustion chamber. When a spark plug fails, it may possibly trigger quite a lot of issues, together with engine misfires, tough idling, and poor gasoline economic system. By testing the spark plug with a multimeter, you may shortly and simply decide if it’s the supply of your engine issues.
To check a spark plug with a multimeter, you will have the next instruments: