What does "fuel pump cavitation" mean?

Fuel pump cavitation refers to the phenomenon where vapor bubbles form within a liquid, particularly in the context of a fuel pump. When the pressure in the pump drops below the vapor pressure of the fuel, this can lead to the formation of these bubbles, which can collapse as they move into higher pressure areas within the pump. This collapse can create shock waves, causing mechanical damage and decreased efficiency in the pumping process.

The formation of vapor bubbles disrupts the smooth flow of fuel, leading to a situation where the pump is not able to deliver fuel effectively. This can ultimately result in erratic operation, decreased performance, and potential damage to the fuel pump and associated systems. Thus, understanding cavitation is crucial for maintaining the integrity of the fuel system and ensuring efficient operation.