What can worn spark plugs affect in a vehicle?

Worn spark plugs can significantly impact fuel economy and engine performance due to their critical role in the ignition process of an internal combustion engine. Spark plugs are responsible for igniting the air-fuel mixture within the engine cylinders. When they become worn, their ability to create a strong spark diminishes, which can lead to incomplete combustion.

This incomplete combustion can result in a variety of issues, including reduced engine power, rough idling, and misfires. Additionally, the vehicle's fuel efficiency can decline because the engine may consume more fuel to compensate for the inefficiencies caused by the weak or inconsistent spark.

Maintaining optimal spark plug condition is essential for achieving the best performance and economy from the vehicle. Regular inspection and replacement of spark plugs, as per the manufacturer’s recommendations, help ensure that the engine runs smoothly, maximizing both fuel efficiency and overall performance.