How would you describe a properly functioning ignition coil?

A properly functioning ignition coil is fundamental to the ignition system of a vehicle, and its primary role is to generate high tension. The ignition coil transforms the low voltage from the battery into a much higher voltage, typically between 12,000 to 45,000 volts or more, which is necessary to create a spark in the spark plugs. This spark is crucial for igniting the air-fuel mixture in the engine's cylinders, allowing the engine to start and run efficiently.

The high tension generated by the ignition coil ensures that the spark is strong enough to jump the gap in the spark plugs, facilitating combustion. Without this high voltage, the ignition system would be unable to start the engine or maintain operation, leading to poor performance, misfiring, or complete engine failure. Thus, the ability of the ignition coil to generate high voltage directly correlates with the overall effectiveness and reliability of the engine’s ignition system.