Bilge Pump Running But Not Pumping

[Scout 30]

Any thoughts on what the best diaphragm pump would be for this application?

[Sailmonkey]

Originally Posted by Scout 30

Any thoughts on what the best diaphragm pump would be for this application?

We've been using one of these for the last 9 years with 0 problems (the float switch is another story).

https://jet.com/product/detail/eced9...8-6a603c93b93f

[Terra Nova]

Diaphragm pumps are generally much more expensive and have much more limited capacity for their size, so choose one with extra capacity.

This is what I use.
Jabsco 36600 Series Bilge Pump

[Sailmonkey]

Originally Posted by Terra Nova

Diaphragm pumps are generally much more expensive and have much more limited capacity for their size, so choose one with extra capacity.

This is what I use.
Jabsco 36600 Series Bilge Pump

I use the small one for maintenance and have a big centrifugal mounted high for "emergency" dewatering.

[Scout 30]

Originally Posted by Sailmonkey

I use the small one for maintenance and have a big centrifugal mounted high for "emergency" dewatering.

I've got a similar set up with a Rule 2000 5 year pump & a See Water pump switch.

[Scout 30]

Here's an update. I removed the pump, made sure it was clean it & re-installed it facing towards the bow so that the pump body would not block the flow of water. I also re-ran the hose so that there are no low spots. None of this fixed the problem. It still runs without pumping. I then unhooked the power to it & filled the bilge till the pump was under water. When I reconnected the power it pumped great. I went to the Whale website I it turns out they now recommend that these pumps be installed at an angle with the water sensor higher than the pickup. In fact they now have a wedge attachment for the optimum angle. So I changed the angle of the pump & it appears to have fixed the problem.