What might cause an engine to misfire?

An engine misfire occurs when one or more cylinders fail to ignite the air-fuel mixture as expected. Faulty spark plugs can lead to inefficient or uneven combustion, which directly causes misfires. They are essential for creating the spark needed to ignite the fuel in the combustion chamber. Additionally, problems with fuel delivery, such as clogs in fuel injectors or a failing fuel pump, can prevent the right amount of fuel from reaching the engine. This imbalance can cause the engine to misfire because all cylinders rely on the correct mixture of air and fuel for optimal performance. Furthermore, ignition system failures, whether from a bad ignition coil or wiring issues, also hinder the spark needed for combustion. Each of these factors significantly impacts engine performance and can lead to misfiring, making this choice the most comprehensive and accurate answer.