Engine Misfires: Symptoms, Causes and When to Get Help

A misfire feels like a hesitation, a stumble, or a sudden jerk under acceleration. You may also feel it as a vibration at idle.

Misfires are usually ignition-related—spark plugs, coils, or wires—but they can also stem from fuel delivery or compression problems.

A flashing check engine light means the misfire is severe enough to damage the catalytic converter. Don't keep driving.