What happened to the water pressure? - Page 3 - SailNet Community
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post #21 of 38 Old 04-09-2019 Thread Starter
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Re: What happened to the water pressure?

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Is there water leaking from the pump? I had a similar problem that was caused by a cracked diaphragm. It was leaking badly as the pump ran, and no pressure developed. How about a failed impeller?
no visible water leaking in the system. New pump is on the way... if that doesn't solve the problem it's some air leak.

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post #22 of 38 Old 04-09-2019
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Re: What happened to the water pressure?

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no visible water leaking in the system. New pump is on the way... if that doesn't solve the problem it's some air leak.
You've already checked everything I can think of that it might be so I can't add anything useful but will be very interested in what you finally determine the problem to be. I suspect you're right that over the winter something happened to make the pump or at least the pressure sensor in the pump not work correctly. But please let us know for sure once this mystery is solved for sure!

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post #23 of 38 Old 04-10-2019
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Re: What happened to the water pressure?

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Originally Posted by SanderO View Post
Probably correct. I am now thinking to simply remove the pump over the winter... 2 quick connects, 4 screws and 2 crimps..
The power on my pump is run to a terminal block immediately next to the pump, so I don't have to cut wires to remove it. In my case, it's a spade block, so I just unplug it. A screw down terminal block is a better idea, but still only a second to remove a screw and ring connector, rather than cut and have to re-splice each year.

Cheers. Let us know if the pump solves the problem.
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Re: What happened to the water pressure?

each and every time this happens to me it is due to air bubble in pump. it only happens when i donot fill tank before the water runs out and i donot open taps while filling.
this seems to make a difference.
so to fix it i always had to take the pump out of installed area and prime the thing.
and folks wonder why i want foot pump water instead of pressure.
also check each and every single connection between tank and faucet. best of luck.


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post #25 of 38 Old 04-10-2019
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Re: What happened to the water pressure?

I’ve had some of the Shurflo pumps that wouldn’t prime from my bilge tanks if the hoses (input or output) had air in them when I started the system. In my case, i have two tanks which are higher than the pump. I primed with them, purged ALL the air from the system by opening ALL the faucets and shutting each one off when the air was gone.
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post #26 of 38 Old 04-10-2019 Thread Starter
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Re: What happened to the water pressure?

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Originally Posted by svinshallah View Post
I’ve had some of the Shurflo pumps that wouldn’t prime from my bilge tanks if the hoses (input or output) had air in them when I started the system. In my case, i have two tanks which are higher than the pump. I primed with them, purged ALL the air from the system by opening ALL the faucets and shutting each one off when the air was gone.
Could be the prime. I tried all manner of opening and closing the two faucets with the pump running to no avail. I am awaiting the new pump... and if that solves the problem... old pump was defective. If it doesn't I am back to the drawing boards with a spare pump. Tomorrow or Friday.

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post #27 of 38 Old 04-12-2019 Thread Starter
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Re: What happened to the water pressure?

New pump works fine. I think the old one was probably OK. Now it's a spare.

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post #28 of 38 Old 04-12-2019
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Re: What happened to the water pressure?

What makes you think the old one was probably OK Sander? I ask b/c I had one go on me a while ago. I too just swapped it out for a new one that I had on hand, but now you’re making me think I should have kept the old one.

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Re: What happened to the water pressure?

Keeping the old pump as a spare means it will work as well as it did before you removed it ! So what was the problem?
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post #30 of 38 Old 04-12-2019
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Re: What happened to the water pressure?

Why will it work any better as a spare since it was the problem?


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