A fuel injector is a crucial component in modern internal combustion engines. Its primary function is to deliver the right amount of fuel into the engine's combustion chamber. This process ensures efficient fuel combustion, which helps improve engine performance and reduce emissions. Fuel injectors are typically electronically controlled, allowing for precise timing and quantity of fuel injection based on the engine's needs. Fuel injectors replace older carburetor systems, offering better fuel efficiency and responsiveness. They work by atomizing the fuel, creating a fine mist that mixes with air for optimal combustion. Proper maintenance of fuel injectors is essential for maintaining engine health and performance.