What is a common symptom of a malfunctioning fuel injector?

A common symptom of a malfunctioning fuel injector is engine misfires or poor acceleration. When the fuel injector is not operating properly, it may either deliver too little or too much fuel to the engine. This disrupts the air-fuel mixture that is crucial for optimal combustion. As a result, the engine can experience misfiring, which is when one or more cylinders fail to fire at the correct time, leading to a rough running condition. Additionally, poor acceleration often occurs because the engine does not receive the right amount of fuel needed for smooth and effective power output, making the vehicle feel sluggish and unresponsive when the throttle is applied. Understanding these symptoms is essential for diagnosing fuel system issues and maintaining engine performance effectively.