Archive: 2025 / 05 - Page 2

Spark Plugs Changed—Why Is My Car Running Worse?

Sometimes, after swapping out spark plugs, drivers notice their car actually runs worse instead of better. This article breaks down why that happens, what mistakes people make, and how to fix common spark plug problems. You'll learn how to spot installation issues, pick the right parts, and avoid easy-to-make errors. Simple checks and tips can help make sure your car runs smoother after a spark plug change. No more guessing—get real answers.