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Old 06-18-2022, 10:43 AM   #21
sourdough
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If your pump is running 2-3 seconds then only stays off 3-5 seconds you have a fair sized leak you should be able to find. You said you've purged all the air. If it was the toilet that much water could be heard and seen exiting the toilet. If it was elsewhere by not that much water should be evident in the floor or running under the trailer. That assumption is if it was running all the time. If you are shutting it off after each use then the water may not be accumulating that much.

I would first check every connection; under every sink, toilet, drains, water heater, outside shower; behind the walls...everywhere. I've found leaks over the years in/under all of them. If there is nothing there then pull the pump and see what's what.
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Old 06-18-2022, 06:49 PM   #22
Jason.rhodes86
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Yeah Iím gonna have to look into the pump. The fact that itíll work fine for a couple hours then cycle randomly makes me think itís not a leak because if it was, it would continue to cycle the whole time.
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Old 06-23-2022, 07:24 AM   #23
rabreen
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Originally Posted by JBM3M View Post
I find if I go from tank water to city water I get air in system on change. FYI
Likewise. If I've forgotten to switch from "Fill" to "Normal" in the wet bay and I'll get the cycling of the water pump.
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Old 06-23-2022, 08:56 AM   #24
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I had the same problem. I finally realized that when Iíd de-winterised the camper, I hadnít put new plumbers tape on the water heater anode rod thread, and so a small amount of water was leaking into the water heater compartment. I just removed the anode rod, applied plumbers tape, reinstalled and problem solved. I guess I knew the problem was probably a water leak, the problem was simply locating it.
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Old 06-23-2022, 09:33 AM   #25
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Not in city water. Filled the tank on arrival
WHEN Tank FILL VALVE is in the fill position your pump will cycle.on. MUST MOVE VALVE OFF of Fill when not filling tank
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Old 06-23-2022, 04:23 PM   #26
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A quick follow-up... why do you typically use the water pump versus shore water???
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Old 06-25-2022, 02:47 AM   #27
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Had the same issue once and it was air in the outside shower.
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Old 06-26-2022, 12:33 AM   #28
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A quick follow-up... why do you typically use the water pump versus shore water???
Iíll answer this real quick. Many people camp in areas where there isnít shore waterÖ. State parks, national parks, and the great BLM and other properties. My current camper is now 8 years old and has had full hookups 2 times. Everyone has a preference.


TO THE OP, did you find the problem? If itís not air(commonly missed is outside shower like mentioned above), check your pump! Mine was ďleakingĒ at the center seal. It had very little water under the pump that was hard to see. I caught it by seeing a couple beads of sweat building up where the two halves of the pump are held together. A little muscle with a screwdriver on the four screws solved my issue. I had roughly the same cycling as you, a couple seconds on every few minutes.
I hope you found issue, get out there and use it.
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Old 06-26-2022, 07:51 AM   #29
Jason.rhodes86
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Originally Posted by Hoodlatch View Post
Iíll answer this real quick. Many people camp in areas where there isnít shore waterÖ. State parks, national parks, and the great BLM and other properties. My current camper is now 8 years old and has had full hookups 2 times. Everyone has a preference.


TO THE OP, did you find the problem? If itís not air(commonly missed is outside shower like mentioned above), check your pump! Mine was ďleakingĒ at the center seal. It had very little water under the pump that was hard to see. I caught it by seeing a couple beads of sweat building up where the two halves of the pump are held together. A little muscle with a screwdriver on the four screws solved my issue. I had roughly the same cycling as you, a couple seconds on every few minutes.
I hope you found issue, get out there and use it.

I use the water pump because Iím not usually at full hookup site, electric only. So I fill my tank on arrival.

I have not figured out the issue. The thing that makes me think itís not a leak is because itíll randomly stop cycling at times for a while. A leak would not fix itself for a couple hours then start leaking again. I have opened all faucets to include outside shower isnít helped. So Iím likely gonn have to look into the pump itself.
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Old 06-26-2022, 09:05 AM   #30
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Originally Posted by Jason.rhodes86 View Post
I use the water pump because Iím not usually at full hookup site, electric only. So I fill my tank on arrival.

I have not figured out the issue. The thing that makes me think itís not a leak is because itíll randomly stop cycling at times for a while. A leak would not fix itself for a couple hours then start leaking again. I have opened all faucets to include outside shower isnít helped. So Iím likely gonn have to look into the pump itself.
One "non plumbing issue" that you might consider is the electrical connections/battery condition. The pump motor MUST spin at the required RPM to drive the pump diaphragm fast enough to deliver pressure sufficient to activate the pump pressure switch. If the voltage/amperage is just barely at the minimum (caused by corrosion on the connections, loose electrical connections or a bad/discharged battery, etc) the pump may not be able to achieve the pressure adequate to go beyond the "bare minumum"....

I've seen several "run on pumps" that will run under nominal pressure load at full speed, then, as the water pressure builds, the pump doesn't have enough amperage to continue at full speed and the pump starts to "wind down" until it's barely "burping to attain water pressure"... The pressure switch will close, but as that "trace of air in the low point drain or elsewhere" allows the pressure to drop slightly, the pump will "burp again"... Sometimes it will keep doing this on a continual basis.

You might want to check all the electrical connections to the pump, feel the wires, the twist on connectors or the caps on the swedge connectors to see if they're warmer than they should be.

If there's no "plumbing reason for the pump action" it may be an electrical issue.....
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Old 06-26-2022, 04:33 PM   #31
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A quick follow-up... why do you typically use the water pump versus shore water???
I'll answer too. We do not run water from shore water. We always fill the fresh water tank and pump from there. We've been doing this for over 20 years, 3 travel trailers, and now our Fifth Wheel. Why?

First? And the most important reason, water pressure. when using the on-board water pump, we never have to worry about over pressure, a pressure regulator, or anything like that. We always have consistent water pressure and no threat of over pressure, breaking pipes, or pipe joints.

Second? We did (a long time ago), keep the garden hose hooked up, until one very hot summer day, the garden hose actually exploded.

Third? I have never had a garden hose, (white, green, blue, or black) that did not leak at the connections. Leading water at the connections is such a waste of water. Its one thing having a little leak when filling a tank, or a bucket. But to leave the leave running 24x7 for a several days while hooked up, is just a horrible waste of everything.

Forth? No danger of tripping over garden hoses laying on the ground, campground workers mowing over one, or theft, or even "kids play" when kids (might) mess with your stuff .... being kids, or just being a little on the rotten side! (Kids are kids... and even some adults are just plain cruel).

Fifth? When pumping water from the fresh water tank, we keep track of our water usage, and also helps determine how much water is in the black and gray tanks. Water in, water out, knowing how much you use, and how much you waste is being a responsible camper.

Sixth? If we ever do have a water leak, the water pump will start cycling on and off and we can hear that. If the water pump kicks on and we are not running water ... it gets our attention real, real fast. Sometimes it's a faucet drip, or it might be the water heater drain plug, or even the pressure relief valve on the water heater. But when we hear the pump cycle ... we jump to action immediately! If hooked up to city water, you could easily run 100 gallons of water and flood the underbelly of your camper and never know it.

For all these reasons, we pump from our tank.
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Old 06-27-2022, 07:01 AM   #32
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All good points Dutchmensport.
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Old 06-28-2022, 11:32 AM   #33
Dana Bethany Julia
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Pump short cycles

Opened up camper April 25th 22. Took to my dealer for a reca6on a regulator valve. They fix the master bedroom toilet flush valve. Took it home packed it up to drop it off at the campsite. We pumped in fresh water into the tank, went the following weekend and realized the pump was short cycling every 20-30 seconds. I haven't found any leaks around the pump or any valves. We've had to turn off the pump after using it.
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Old 07-03-2022, 10:35 AM   #34
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There is also a pressure adjustment screw on Flo-jet pumps. If all the other recommendations don't solve the issue, you can adjust the pressure screw. It worked for me.
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Old 07-03-2022, 04:18 PM   #35
Jason.rhodes86
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Went in and looked at the pump today. Haven’t taken it out yet but probably do that next to check for debris etc.

I do have a flo jet pump so I will look for the pressure screw. Where is it normally located?
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Old 07-04-2022, 03:02 PM   #36
Dana Bethany Julia
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Thank you. Where is this screw
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Old 07-04-2022, 04:54 PM   #37
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Thank you. Where is this screw
It's located on the end of the pump head, behind a plastic plug. BUT: I've never seen one that needed adjustment. Either they work or they don't. If you're going to "adjust it anyway" remember that 1/4 turn at a time is the recommended procedure. And, also remember that once you start "tweeking it" you won't really know what the pressure setting is, could be going up in pressure or could be going down in pressure, depending on whether you're in front of the pump or behind the pump... Clockwise is the opposite direction, depending on where you're standing..... And, if the screw falls out in your hand, a new pressure switch, if you can find one, was $28 the last time I ordered one. Probably double that now. A new pump is about $60, so the switch may cost as much as a new pump.

So, some thought about what you're doing if you're going to jump off the deep end..... YMMV
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