What can be a consequence of a faulty ignition coil?

A faulty ignition coil can lead to several issues in an engine's performance. One of the primary roles of the ignition coil is to generate the high-voltage electrical current necessary to spark the fuel-air mixture in the combustion chamber. If the ignition coil is malfunctioning, it can produce inconsistent spark generation, which directly affects engine performance. An inconsistent spark can cause misfires, leading to poor combustion and ultimately resulting in decreased fuel efficiency as the engine struggles to operate effectively with imbalanced combustion cycles.

Additionally, issues related to the ignition coil can contribute to engine overheating. When the engine misfires due to weak or erratic sparks, unburned fuel can accumulate in the exhaust system, causing excess heat. The accumulated unburned fuel can lead to higher operational temperatures, putting strain on the engine and other components.

Since a faulty ignition coil can cause inconsistent spark generation, decreased fuel efficiency, and engine overheating, selecting the choice that includes all of these consequences appropriately captures the range of potential issues stemming from a defective ignition coil. Each outcome is interconnected, illustrating how a single component failure can affect overall vehicle operation.