Your car’s spark plugs play an essential role in your vehicle by igniting the engine’s air-fuel mixture. This gets the pistons to move, which ultimately allows your car to get from Point A to Point B. Worn spark plugs can contribute to car repair issues over time. The following performance problems are warning signs that it is time to replace yours.

When Do You Need to Replace Your Spark Plugs?

1. Engine Misfires

This occurs when the cylinders do not fire in their proper order. It typically results in a loud pop or backfiring noise. A misfiring engine will generally have worse gas mileage, while also limiting engine power and increasing emissions. Even a single faulty spark plug will cause frequent misfires.

2. Trouble Starting

While car repair issues like a dead battery or faulty alternator are more likely to keep your car from starting, bad spark plugs can also contribute to this problem. When the spark plugs are dirty or damaged, they may not be able to provide enough of a spark to start the engine. In some cases, damaged spark plugs can drain the battery, making it more likely to die.

3. Rough Idling

Faulty spark plugs will cause a wide range of performance issues while driving. While they can interfere with vehicle acceleration, engine trouble is most often noticed while idling. The engine might make a loud knocking or rattling sound. It might even sound like it could give out entirely while you are waiting at a stoplight. 

Whether you need a routine oil change or more intensive car repair, expect quality results from Stillwater Auto Clinic. Serving Washington County, MN, since 1977, this auto shop provides friendly and reliable service to build long-term relationships with its clients. To learn more about what they can do for your vehicle, visit them online. Call (651) 351-7188 to set an appointment. Read satisfied customer reviews on Google.