Where is the spark plug located in a sedan?

[McElla]

The spark plug in a sedan is typically located inside the engine cylinder and can be seen after removing the high-voltage ignition coil. The spark plug is a crucial component of a gasoline engine's ignition system, which introduces high-voltage electricity into the combustion chamber, causing it to jump across the electrode gap and generate a spark to ignite the combustible air-fuel mixture in the cylinder. The main types of spark plugs include: standard spark plugs, extended insulator spark plugs, electrode spark plugs, seat-type spark plugs, and pole-type spark plugs. Spark plugs require regular maintenance. Since the engine speed is one thousand revolutions per minute, the spark plug needs to fire five hundred times per minute, making it one of the busiest components in a car. During maintenance, it's essential to first soften carbon deposits with a liquid such as gasoline or kerosene, then clean them with a non-metallic brush, and finally dry them with compressed air. Avoid using methods like scraping with a knife, as this could damage the electrodes.