How Everything Works
How Everything Works How Everything Works

Question 192

How does using better spark plugs make your car run more efficiently? Is it worth paying extra for those spark plugs? Would it improve your car's performance?
According to several readers of this web site, there is a difference between standard and high performance spark plugs. The high performance spark plugs produce a more intense spark and ignite the fuel and air mixture more reliably than standard plugs. That would indicate that igniting the fuel and air mixture at just the right moment isn't as straightforward as it seems. If the plugs don't fire reliably and don't light the gasoline at exactly the right moment every single time the cylinder is supposed to fire, the car's efficiency will suffer.

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