Tag: bad spark plug

Ever wondered if your car troubles come from a bad ignition coil or a dud spark plug? This article digs into the key signs for each problem, offers real-world tests, and tells you which issues demand immediate attention. You'll learn what to listen and look for, how to try basic checks at home, and when it's worth replacing these parts. No fluff, just the info you need for quick, confident troubleshooting. Avoid extra mechanic bills and keep your ride running smooth.