Just did a three week trip with our Eagle Cap Camper. Late in the trip we noticed when we ran the water pump and ran water no matter whether it was a short quick run of water or enough water to make the pump run again. Then turned if we turned the water off and back on there was NO water pressure what so ever No water comes out of the tap until the pump is turned on. In other words the water line is not holding pressure for even a couple minutes.Is the PUMP Failing or is there a Check Valve that I am not aware of that is Failing?????Appreciate any wisdom out there!?!!?!??!GARY

The pump has a built-in check valve. There could be some debris holding it open. You may be able to disassemble the pump head and clear it.

Probably more trouble than it's worth but you could add a check valve in the line after the pump if you can't fix the internal valve.

Check all your faucet connections... Under the sinks, toilet, back side of tub/shower faucet and the water heater where the connections are made. My money is on one of those connections dripping and causing you to loose your pressure.

Faulty pressure switch on pump.When you open a faucet the ON-Demand pump should start almost immediately due to the instant drop in pressure, same if leak occurred and no pressure in line.....pump would start build pressure.stop repeat when/if pressure droppedPump would cycle repeatedly within short amount of time if pressure dropped provided the pump PRESSURE SWITCH was working.When pump does run how is flow/pressure?2011 camper probably has a Shurflo Classic 2008 pump.That has been discontinued so any parts would be Old StockPressure switch can be changed but easier and not much more in cost to replace with a Shurflo Revolution 4008 (little higher flow and bit higher pressure 3 gpm/55#)

Old-Biscuit wrote:Faulty pressure switch on pump.When you open a faucet the ON-Demand pump should start almost immediately due to the instant drop in pressure, same if leak occurred and no pressure in line.....pump would start build pressure.stop repeat when/if pressure droppedPump would cycle repeatedly within short amount of time if pressure dropped provided the pump PRESSURE SWITCH was working.When pump does run how is flow/pressure?2011 camper probably has a Shurflo Classic 2008 pump.That has been discontinued so any parts would be Old StockPressure switch can be changed but easier and not much more in cost to replace with a Shurflo Revolution 4008 (little higher flow and bit higher pressure 3 gpm/55#)The OP's pump is running just fine. The complaint is that there is no residual pressure with the pump OFF. This is a leak on the pressure side, either something is losing water into or outside the camper or (more likely) just leaking back through the pump.Easy to pull the pump end off and take it apart. (6 screws). Check the rubber valves for debris and then re-assemble. Nothing much to lose. If that isn't it, add a check valve or get a new pump. This is all assuming there's no visible leak anywhere.

Water Pump issues or is it a CHECK VALVE ISSUE???

Old-Biscuit
Explorer III
Oct 12, 2016
Faulty pressure switch on pump.

When you open a faucet the ON-Demand pump should start almost immediately due to the instant drop in pressure, same if leak occurred and no pressure in line.....pump would start build pressure.stop repeat when/if pressure dropped
Pump would cycle repeatedly within short amount of time if pressure dropped provided the pump PRESSURE SWITCH was working.

When pump does run how is flow/pressure?

2011 camper probably has a Shurflo Classic 2008 pump.
That has been discontinued so any parts would be Old Stock
Pressure switch can be changed but easier and not much more in cost to replace with a Shurflo Revolution 4008 (little higher flow and bit higher pressure 3 gpm/55#)
Diesel_Camper
Explorer
Oct 12, 2016
Check all your faucet connections... Under the sinks, toilet, back side of tub/shower faucet and the water heater where the connections are made. My money is on one of those connections dripping and causing you to loose your pressure.
agesilaus
Explorer III
Oct 12, 2016
Probably more trouble than it's worth but you could add a check valve in the line after the pump if you can't fix the internal valve.
Dutch_12078
Explorer II
Oct 12, 2016
The pump has a built-in check valve. There could be some debris holding it open. You may be able to disassemble the pump head and clear it.

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Water Pump issues or is it a CHECK VALVE ISSUE???

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