My Sure Flow water pump runs but does not pump water. The water tank is full. ????? Any ideas as to why this might happen? Worked okay a day ago. Thanks in advance.
Air bound......open a faucet and let it run to expel trapped air
Air in leakage.....pump can't prime due to sucking air in on suction side of pump. Cracked pump casing, strainer loose/cracked, loose hose clamps. winterizing valve open
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