What can occur if water in diesel fuel is not separated?

If water in diesel fuel is not separated, it can cause serious damage to fuel injectors. Diesel engines rely on proper fuel atomization for efficient combustion, and water does not combust like diesel fuel does. When water enters the fuel system, it can lead to corrosion and rust within the fuel injectors, affecting their performance and increasing the risk of injector failure.

Additionally, water in fuel can lead to issues such as fuel emulsion, which can clog filters and disrupt the normal operation of the engine. This, in turn, may result in reduced engine power, rough running, and eventually costly repairs. Therefore, addressing water contamination in diesel fuel is crucial for maintaining engine health and performance.