Posted on 3/28/2025
A rough idle can be frustrating, especially when you’re stopped at a red light or waiting in a parking lot. Instead of a steady, smooth hum, your engine may sputter, shake, or even feel like it’s about to stall. There are many possible causes of rough idling, from minor issues to more serious engine problems. Understanding why it’s happening can help you figure out if it’s something simple or if you need professional repair. Common Causes of a Rough Idle A rough idle can stem from several different issues, ranging from fuel system problems to worn-out engine components. Some of the most common causes include: Dirty or Faulty Spark Plugs Spark plugs ignite the air-fuel mixture in your engine’s cylinders. Over time, they can become dirty, worn out, or misfiring, which leads to uneven combustion. This can cause your engine to shake or stumble when idling. If your vehicle hasn’t had a tune-up in a while, replacing the ... read more