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Typically, a 4-cylinder engine will have four spark plugs, with one spark plug per cylinder. These spark plugs are crucial for the ignition system, as they ignite the air/fuel mixture within the cylinders to power the engine. In certain modern or high-performance applications, such as "twin-spark" or "dual ignition" systems, there might be two spark plugs per cylinder, leading to eight spark plugs in a 4-cylinder engine. However, the traditional and most common setup remains one spark plug per cylinder. Regular maintenance and timely replacement of spark plugs are essential for optimal engine performance, fuel efficiency, and to prevent misfires. Always refer to the vehicle's manual for specific maintenance guidelines and specifications related to your engine's spark plug requirements.
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