What does a spark plug do?

A spark plug is an essential component of an internal combustion engine, such as those used in cars, trucks, and motorcycles. Its primary function is to ignite the air-fuel mixture in the engine's combustion chamber, providing the energy that drives the engine.

Here's how a spark plug works:

1. The engine's ignition system generates a high voltage electrical spark that jumps across the gap between the center and ground electrode of the spark plug.

2. This spark ignites the air-fuel mixture in the combustion chamber, causing a controlled explosion that drives the engine's piston down.

3. The energy from the explosion is transmitted through the engine's crankshaft, which converts it into rotary motion, driving the wheels of the vehicle.

In addition to igniting the fuel mixture, spark plugs also play a crucial role in engine performance. They help to maintain the correct air-fuel ratio and ensure that the engine runs smoothly and efficiently. When the spark plug is working correctly, the engine will run smoothly, and fuel consumption will be optimized. However, when a spark plug is worn or damaged, it can cause a misfire, leading to reduced engine power, increased fuel consumption, and potential engine damage.

Spark plugs come in different sizes and heat ranges to suit different types of engines and driving conditions. It is essential to use the correct type of spark plug for your engine to ensure optimal performance and avoid potential problems. Regular inspection and replacement of spark plugs according to the manufacturer's recommendations can help to maintain your engine's performance and prevent costly repairs.