Spark plugs supply a spark that ignites the air and fuel mixture, creating the power needed for the engine. It is essential to replace the spark plug as part of your preventative maintenance tasks, to ensure a smooth and efficient running machine. A worn spark plug can cause the engine to not start, a rough running engine, stalling, and increased fuel consumption. It is best to change your spark plug regularly to avoid these symptoms, however if you are experiencing one, the spark plug should be one of the first components you check.
