Explore the essential role of spark plugs in engine performance through this comprehensive 18-minute video. Learn about spark plug construction, function, and the ignition process. Discover the importance of proper spark plug gap and the differences between cold and hot plugs. Delve into the history of spark plugs and compare various types including copper, platinum, iridium, and multi-electrode designs. Gain valuable insights into how spark plugs impact fuel economy, combustion efficiency, and overall engine reliability. Perfect for automotive enthusiasts and those seeking to understand the intricacies of engine components.