Agricultural and Biosystems Engineering
After an engine has been immersed in water for a period of time, such as occurs in a flood or "dropping in a lakes" situation, it usually can be salvaged. It will need to be cared for immediately, however. If an engine is not cleaned, rusting can occur and the soil particles suspended in the water and deposited on the equipment can cause rapid and excessive wear of bearings and engine parts if the machine is operated.
Durland, G.R. (Bob), "After a Flood: Engine and Machine Renovation" (2002). SDSU Extension Extra Archives. 13.