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Old 11-20-2015, 06:33 AM   #25
boatpoker
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City: Here
Join Date: Sep 2012
Posts: 2,940
Lift pump diaphragms degrade over time and will leak causing this type of problem.
The leaks can be miniscule and very difficult to see even if you take the pump apart. As you have no idea how old they are and they are cheap ..... replace them.
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