Misfiring Engine or Rough Idle? When to Replace VW Spark Plugs & Ignition Coils
Key Takeaways Misfires start small: A slight stumble at idle or a hesitation on acceleration is often the first hint that a plug or coil is wearing out. A flashing check engine light is urgent: It signals a severe misfire that can damage the catalytic converter, so reduce speed and get the vehicle inspected promptly….