Spark Plugs

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Spark Plugs Description and Price in Kenya

Most people don’t think twice about their spark plugs, yet these small parts play an incredibly important role in how your car functions. In fact, without properly working spark plugs, your car more than likely wouldn’t be able to run at all. In this blog, our auto repair experts will take a closer look at why your spark plugs are so important, including what they do and how to know when it may be time to replace them.

What Do Spark Plugs Do?

Your engine is a pretty remarkable machine, designed to turn an energy source (gasoline) into actual movement. But how does it do this? The answer is the principle known as internal combustion. In order to turn the fuel in your car from a source of potential energy into a source of kinetic energy, your engine needs to find a way to release it, and it does so through the combustion process.

The engine cycle is what makes this process happen. In your engine cycle, your valves fill your cylinder with a mixture of air and fuel, which are highly-explosive when combined. As the piston in your engine moves upward, it compresses this mixture until it’s in an extremely small space, creating even more potential energy. At the peak of this compression, your engine ignites this mixture with a small spark, creating an explosion that forces the piston back downward, turning the crankshaft in your engine and creating the power which makes your car move forward.

Your spark plugs are what supply the spark that ignites the air/fuel mixture, creating the explosion which makes your engine produce power. These small but simple plugs create an arc of electricity across two leads which are not touching, but close enough together that electricity can jump the gap between them. Your spark plugs, along with the electrical and timing equipment which powers them, are part of what’s known as your ignition system.

Generally, your spark plugs are made from extremely durable material, and are capable of withstanding millions and millions of explosions before wearing out or needing to be replaced. But it’s true that over time, the explosions and corrosion lead to smaller or weaker sparks, which leads to reduced efficiency in your engine, and could lead to other issues including misfiring, or failure to fire.

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