Spark Plug

A spark plug is a crucial component of an internal combustion engine. It is responsible for igniting the air-fuel mixture in the combustion chamber, creating a controlled explosion that powers the engine.

The spark plug consists of a metal shell, an insulator, and a central electrode. The metal shell is threaded into the engine cylinder head and acts as a ground connection. The insulator is made of ceramic material and provides electrical insulation between the central electrode and the metal shell. The central electrode extends into the combustion chamber and has a small gap at the end.

When the engine's ignition system sends an electrical current to the spark plug, it creates a high-voltage spark across the gap between the central electrode and the ground electrode. This spark ignites the compressed air-fuel mixture, initiating the combustion process.

Spark plugs are designed to withstand high temperatures and pressures inside the combustion chamber. Over time, however, they can become fouled with carbon deposits or wear out, leading to reduced engine performance, misfires, or difficulty starting the engine. Regular maintenance, including inspecting and replacing spark plugs as needed, is essential for optimal engine performance.

It's important to note that different engines require specific types of spark plugs, so it's crucial to consult the vehicle's owner's manual or a trusted mechanic to ensure the correct spark plugs are used.