What is the effect of injector size on engine performance?

The relationship between injector size and engine performance is crucial for optimal operation. When it comes to smaller injectors, they can limit the amount of fuel being delivered to the engine, which may not meet the power demands during high-performance situations. Since the injectors are responsible for atomizing and delivering fuel into the combustion chamber, their size plays a significant role in determining how much fuel can be injected within a given time frame.

If the injectors are too small, the engine may not receive enough fuel, leading to a condition known as lean running, where there is too much air relative to the fuel. This can result in insufficient combustion and ultimately restrict the engine's power output. Therefore, the correct understanding is that smaller injectors might limit power, making option C accurate as it directly addresses how injector size can impact an engine's capability to perform to its fullest potential.

The other options do not accurately reflect the nuances of how injector size influences engine performance.