Where is the car spark plug located?
2 Answers
Spark plugs in cars are generally located inside the engine cylinders. Here is some relevant information about spark plugs: The function of a spark plug is to introduce high-voltage current into the cylinder to generate an electric spark, which ignites the combustible gas mixture and maintains engine operation. It is important to note that high-power engines with large compression ratios typically use cold-type spark plugs with high heat values, while low-power engines with small compression ratios use hot-type spark plugs with low heat values. Generally, the selection of spark plugs is determined by the factory through product type testing and should not be changed arbitrarily.
Every time I explain the location of spark plugs to friends, I enjoy popping open the hood and gesturing. The spark plugs are hidden right at the center of those cylindrical metal parts on top of the engine. A four-cylinder engine has four, and a six-cylinder has six—one for each cylinder head. They're usually completely concealed under the ignition coils. To find them, you first need to unplug the ignition coil connectors, remove the mounting screws, and gently pull out the coils to reveal them. The spark plugs are threaded directly into the cylinder head and require a magnetic spark plug socket to loosen. Their positioning directly affects the combustion efficiency of the air-fuel mixture, and some performance models even lower the spark plug position to optimize the combustion chamber shape.
