What happens if fuel is contaminated with water?

Fuel contamination with water can significantly disrupt engine performance and operation. When water is present in the fuel, it can cause issues such as engine flame-out, which refers to the engine losing its ability to sustain combustion. This occurs primarily because water does not combust, and its presence in the fuel can lead to improper fuel-air mixtures, potentially causing the combustion process to fail.

Additionally, the water in the fuel can cause corrosion and harmful deposits in the fuel system, leading to blockages and further operational problems. These factors combined can seriously impair engine function, especially in aviation, where consistent engine operation is critical for safety. Thus, the potential for an engine flame-out due to water contamination in fuel highlights the importance of ensuring fuel quality in aviation and other critical applications.