Using a bilge pump sitting on dock not in water to pump air and not water would this burn up motor or work? It's 12 volt. I think I saw a youtube of a bilge pump pumping air and not water and lasted several years.
Bilge pumps are designed to pump water, not air. They are also designed to run intermittently and are cooled by the water while they are running....IMO trying to use a bilge pump as you describe is a good way to destroy the pump and, if it pumps air at all before it dies, it will be very inefficient.
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