What does metered fuel pressure affect in an injection-type carburetor?

Metered fuel pressure has a significant impact on multiple aspects of an injection-type carburetor, making "all of the above" the correct choice.

Throttle response is influenced by metered fuel pressure because it affects how quickly and efficiently fuel is delivered to the engine when the throttle is applied. A consistent and adequate metered fuel pressure ensures that any changes in throttle position result in prompt adjustment in fuel flow, contributing to an immediate response from the engine.

Fuel atomization is another critical factor affected by metered fuel pressure. Adequate fuel pressure is essential for breaking the fuel into fine droplets as it mixes with air in the intake system. Proper fuel atomization leads to better combustion efficiency, as the air-fuel mixture ignites more effectively, enhancing engine performance and reducing emissions.

Overall engine performance is also tied to metered fuel pressure. The right pressure ensures optimal fuel delivery throughout the engine's operating range, which is crucial for maximum power, fuel efficiency, and smooth operation. Insufficient or excessive pressure can result in performance issues, such as stumbling, rough idle, or poor acceleration.

Thus, metered fuel pressure plays a vital role in throttle response, fuel atomization, and overall engine performance, collectively affirming that "all of the