Fuel injectors deliver precise amounts of fuel into the engine’s combustion chamber for efficient burning. Over time, carbon buildup can clog injectors, leading to misfires, rough idling, or poor acceleration. Cleaning injectors with a professional-grade fuel additive or ultrasonic cleaning can restore performance. In severe cases, replacement may be necessary. Injector performance directly affects fuel economy and emissions. Most manufacturers recommend injector cleaning every 30,000 to 50,000 miles, especially if using lower-quality fuel. Proper maintenance ensures smooth engine operation and prevents costly repairs. Always use high-quality fuel and follow recommended service intervals to keep injectors functioning at peak efficiency.