Water Pump Problem..

I've been battling some plumbing issues and today i replaced my water pump. it's a shallow dug well < 10 feet deep and it's a simple shallow well jet pump 3/4 HP 220V.
Anyways everything is more or less working, but my pump runs for about 8-10 seconds every 10-15 minutes with no water use.
I know there's a very small leak somewhere. That much is obvious.
If i leave it be for a day or two that shouldn't affect the pump too much should it?
Also what's the best way to find such a small leak? I don't see any water leaking anywhere, but it's so darn muggy that there's a lot of condensation so i cant say that with 100% certainty.
Any help or suggestions would be appreciated..
skank
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Skankweed wrote:

No, it won't hurt the pump. You didn't say what size pressure tank you have, if it a small one, you aren't losing much water.
I would suspect a leak in a fixture somewhere, a dripping faucet, a slow overflow in a toilet or the like.
Harry K
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snipped-for-privacy@hotmail.com says...

i think it's 20-30 gallonish..
i'll double check my fixtures... can't hurt... i'm more inclined to believe the problem is somewhere in my handiwork seeing as how it was all good up until this last weekend when all hell broke loose.. I'm thinking maybe i've got some small leak probably in the intake of the pump. I just can't seem to find it mostly due to the weather.. the condensation builds up real fast and it is near impossible to see if it's a leak somewhere, or just condensation..
i'm going to wait for a little drier weather hopefully in the next day or two where i can check it out w/o the muggy air..
thanks for the reply..
skank
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Skankweed wrote:

Ahah. I somehow missed that you had replaced the pump. Yes, I would suspect a leak in the plumbing somewhere in that situation. 20-30 gal tank will have a drawdown in the 5-8 gal range IINM and that adds up for every 15 minutes. I would think a leak that large along visible pipe runs would be visible even with the humidity. I agree with others, check valve and piping leading to the pump would be my first place to look.
Harry K
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Is there a foot valve or check valve in the line? If they leak you'd lose pressure.
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yeah there's a foot valve.. i'm thinking it may be leaking.. i had a check valve too, but i took it out (there's a long story here)..
i'll add a check valve back in this weekend...
thanks a lot for the advice..
skank
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"Skankweed" wrote ...

well living in FL, i can relate to the condesation probs :-) have you tried putting some liquid soap on the handiwork to see if it makes bubbles? if it's a small leak, it could take a minute or so for a bubble to appear,so be patient, and a magnifying mirror helps see under and around connections BTDT
--
lynn




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I would suspect a leak in the check valve in the well, maybe a tiny piece of sand got on the seat. I like to use double check valves for that reason, if one leaks the other seals and the flow eventually will flush the dirt out if it doesn't leak.
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Why did you need a replacement pump and what do you have for a pressure tank? Older galvanized tanks tend to become water logged causing the pump to behave as yours does. If you have a diaphragm style tank water logging shouldn't be an issue. Check that the flapper valve and the water shut off valve in the water tank on the back of the toilets are working properly. I had the constant pump running issue as well, replaced galvanized tank with new 33 gallon diaphragm tank and solved that problem, but then noticed that I always had a trickle of water running . I found that the water valve at the float arm was corroded and not shutting off completely after tank fills. Replaced it with a float-less style valve and solved the problem. For what it's worth I also installed a check valve 2 feet before the pump even though I have a foot valve as well , less feed line to prime that way. As I've found out with this "new" old house of mine "Water, it's nowhere when you want it and everywhere you don't"
best of luck Dave

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