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Old 08-24-2018, 10:10 AM   #1
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Low Water Pressure From Pump

We have a 2019 Coachmen Apex 191RBS that we picked up in May. The water pressure from the pump is very low. I know it's not going to be as good as at home, but it slows to a trickle after just a few seconds. The pump sometimes runs for a minute or two after the water is off. It seems to really be struggling.

We looked at the water lines around the pump and under the camper from the tank and did not find any kinks or leaks. Before taking it back to the dealer, is there anything else we can check or adjust to try and fix the problem?
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Old 08-24-2018, 10:25 AM   #2
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Double check the fill\pump manual valve. Might be labeled something different but if it is left in the fill position then pump will not output any pressure as it is just dumping back into tanks.
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Old 08-24-2018, 10:38 AM   #3
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Check near, or on, the pump to see if there is a screen or filter that's partially plugged. It sort of sounds like the pump is working OK, but can't get enough water to keep up.
The 'high' pressure you get initially is because the pump has properly pressurized the lines, in that minute or so that you hear it running after the water is shut off.
Also check for a kink in the water line from the tank to the pump.
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Old 08-24-2018, 10:55 AM   #4
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A lot of pumps have a small filter right at the intake. If it gets plugged it will do what you are describing. I had the same issue last year. It's an easy fix.
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Old 08-24-2018, 05:01 PM   #5
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Originally Posted by Spk64 View Post
Double check the fill\pump manual valve. Might be labeled something different but if it is left in the fill position then pump will not output any pressure as it is just dumping back into tanks.
Can you explain more about this valve? I don't see what you're talking about. Definitely nothing labeled like that.

I checked the screen on the intake line. It is completely clear, as expected for a brand new RV.
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Old 08-24-2018, 05:18 PM   #6
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Newmars have a ball valve in the water bay that is opened for filling the fresh tank and turned 90 degrees or closed when using water from the fresh water tank. If this valve is not completely closed, some water is pumped back into the fresh water tank, instead of going to the faucets. I have had rvs with this valve and others without it. You may not have it.
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Old 08-24-2018, 05:23 PM   #7
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Originally Posted by Brad34 View Post
We have a 2019 Coachmen Apex 191RBS that we picked up in May. The water pressure from the pump is very low. I know it's not going to be as good as at home, but it slows to a trickle after just a few seconds. The pump sometimes runs for a minute or two after the water is off. It seems to really be struggling.

We looked at the water lines around the pump and under the camper from the tank and did not find any kinks or leaks. Before taking it back to the dealer, is there anything else we can check or adjust to try and fix the problem?

Sounds to me like air in the line. Hook up to city water pressure and see if you still have the problem.

Is the water pressure the same at all faucets?

Is the fresh water tank full and are you level?


Can you disconnect the output side at the pump and check the pressure there?
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Old 08-24-2018, 05:26 PM   #8
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Sounds to me like air in the line. Hook up to city water pressure and see if you still have the problem.

Is the water pressure the same at all faucets?

Is the fresh water tank full and are you level?
The pressure is good when hooked up to city water.

The pressure is the same at all faucets.

The tank is definitely full and we are level front to back and side to side.
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Old 09-13-2018, 11:01 AM   #9
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Just an update in case anyone runs into the same issue:

The dealer found a kinked hose. I believe he said it was just below the floor. We will pick it up tomorrow and see the results of the fix.
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