"Roger Long" wrote in news:a1Bsg.19945$O35.10662
@twister.nyroc.rr.com:

A failing/failed diaphragm wouldn't cause the pump to leak...it
creates an air leak in the pump ....

Ah, light dawns! It's harder to make things vacuum tight than pressure
tight and much, much, harder than watertight. Developing porosity in
the rubber would do exactly what you describe.


The little rubber valves holding back the pressurized water from going back
into the supply tank also leak. They don't fill the bilge and nothing
leaks out of the pump as it goes back into the tank.

That damned buzzing of the pump coming on every 2 minutes for no apparent
reason while you're laying there thinking about all the things that can
sink the boat while you sleep just drives me crazy....trying to get to
sleep in the first place.

Same goes for the stupid electronic bilge pumps that come on to see if
something is there to pump all night....

"Why did that come on? I better get up and check, again."....and
again...and....nuts.