The ignition coil plays a crucial role in the ignition system by transforming low-voltage current from the battery into high-voltage current required to generate the spark in the spark plugs. The ignition coil needs a strong electrical connection to both the vehicle's electrical system and the engine block to function properly.
The ground connection is essential for completing the electrical circuit for the ignition coil. It provides a low-resistance path for the current to flow back to the vehicle's chassis and then to the negative terminal of the battery. When the ground connection is weak or broken, the current faces increased resistance, leading to voltage drop and decreased spark intensity.
With a bad ground on the coil, the current may not be able to flow effectively through the ignition coil, resulting in insufficient ignition voltage or even complete loss of spark. This leads to engine misfires or, in severe cases, the engine may not start at all.
Therefore, a bad ground on the ignition coil can directly impact the delivery of power to the ignition system and cause subsequent ignition problems.
