What does the term “fuel injected” imply regarding the Arrow's engine?

The term “fuel injected” in reference to the Arrow's engine indicates that the engine utilizes electronic fuel injection (EFI) as its method for delivering fuel to the combustion chamber. In this system, fuel is injected directly into the intake manifold or combustion chamber by electronically controlled injectors, which offers precise control over the fuel-air mixture, leading to improved efficiency, performance, and reduced emissions compared to traditional carbureted systems.

This system allows for better fuel atomization, which enhances the combustion process and helps ensure the engine runs smoothly under various operating conditions. Electronic fuel injection systems typically also include sensors that provide data to the engine control unit (ECU), further optimizing fuel delivery based on real-time conditions, such as temperature and altitude.

In contrast to the other options, carburetors are distinct fuel delivery mechanisms that mix fuel with air prior to entering the engine, which does not align with the fuel-injected designation. Additionally, claiming the engine operates without any fuel system is inaccurate, as all engines require some form of fuel delivery for operation. Lastly, a manual fuel pump system does not match the description of an electronic system, which emphasizes automated fuel management and delivery.