Volkswagen Jetta engine misfire due to a failed ignition coil, spark plug, or ignition wire.
An ignition coil or spark plug may fail unexpectedly, resulting in an engine misfire and possible illumination of the Volkswagen Jetta Check Engine Light. Vehicles equipped with spark plug wires may also develop a misfire due to a failed ignition wire.
Repairing a Volkswagen Jetta engine misfire may require replacing the ignition coil, ignition wire set, or spark plugs.