Posted on 6/24/2026
If your vehicle is experiencing rough idling, poor fuel economy, or sluggish acceleration, worn spark plugs may be the cause. Spark plugs are essential to your engine's performance and recognizing the warning signs of spark plug failure can help Sacramento drivers avoid costly repairs and unexpected breakdowns. At Mike and Sons Automotive, we recommend replacing spark plugs and performing a fuel induction cleaning service at 100,000 miles to help maintain peak engine performance, improve fuel economy, and extend the life of your vehicle. Common Signs Your Spark Plugs Are Failing Engine Misfires Engine misfires are one of the most common symptoms of worn spark plugs. You may notice hesitation, jerking, or stumbling during acceleration. Ignoring misfires can lead to more serious engine and catalytic converter issues. Rough Idle If your vehicle vibrates or runs unevenly while stopped, worn spark plugs may be preventing proper combustion. A healthy engine should idle smoothly and ... read more