What are the symptoms of bad spark plug seals?
Maggie
June 5, 2026
June 5, 2026
Why Spark Plug Seals Are More Important Than Most Drivers Realize When discussing engine maintenance, most people focus on spark plugs, ignition coils, engine oil, or fuel injectors. However, one small component often overlooked is the spark plug seal. Despite its relatively simple design, this sealing element plays a critical role in protecting the ignition system and maintaining engine performance.
