Which element helps measure the effectiveness of the ignition system?

The voltage output of the ignition coil is a crucial element in assessing the effectiveness of the ignition system. The ignition coil's primary function is to convert the battery’s low voltage into a high voltage needed to create a spark at the spark plug, which ignites the air-fuel mixture in the engine's combustion chamber.

Using a voltmeter to measure the voltage output helps determine whether the ignition coil is functioning properly. If the output voltage is too low, it may indicate a weak spark, leading to misfires, reduced power, and poor fuel efficiency. Conversely, an appropriate voltage output ensures a strong, consistent spark, critical for optimal engine performance.

Other elements, like fuel injector efficiency, while related to performance, do not directly measure the ignition system's effectiveness. The type of fuel used and engine temperature can also influence performance but are not specific indicators of how well the ignition system is operating.