What is one possible drawback of a fuel injection system on piston aircraft?

Vapor lock is indeed a notable concern in fuel injection systems for piston aircraft. This phenomenon occurs when the fuel within the system vaporizes due to excessive heat or low pressure, leading to the formation of gas bubbles and causing interruptions in fuel delivery to the engine. In a fuel-injected setup, the complexity of the system, including fuel lines and injectors, can contribute to this risk, particularly in hot operating conditions or when the aircraft sits in a hot environment.

While other factors such as engine performance, maintenance costs, and weight considerations can certainly play a role in the overall assessment of a fuel injection system, vapor lock specifically highlights a critical operational challenge that pilots and maintenance teams must be aware of in order to ensure safe aircraft performance during flight. Understanding the potential for vapor lock allows pilots to take preventive measures, such as better fuel management and system inspection, ultimately enhancing safety and reliability.