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  #1  
Old 09-14-2018
TheNomadHorde TheNomadHorde is offline
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Default 1989 WB Water Leak under driver side bedroom floor

Hi, we are new to Bluebirds but not new to RVs, and we have a bit of a water leak mystery.

The floor on the driver side in our bedroom is soaked. We’ve had the bird a few weeks now and this only happens when the tank is filled, not when it’s empty and and on city water. The leak is from under the wood and coming up between the rubber mats.

When this happened the water leaked from several places under the coach but mainly from two lines wrapped in yellow and a few drain-spouts(?).

Here is what we know:
- The fresh water tank is not leaking
- The leak only occurs when the tank is full. If we empty the tank and connect city water there is no leak.
- The leak is not from any water system above the floor (we have checked everywhere we can think of)
- The leak seeps up from underneath the floor, between the black rubber mats, into the carpet.
- When we inspect the coach from underneath, the water seems to flow around black hoses wrapped in yellow that go to the engine compartment.
- It also comes out around the drainage tubes

Here is our theory:

- The water system that heats the water by running it through the engine compartment is leaking.
- We suspect it is leaking at a connection point for these lines and then following the lines out through the insulation, as well as hitting other drainage points along the way.

Our questions:
- Is our theory sound, or are we missing something?
- Is there a way to check this system ourselves, without prying up the entire floor?
- Does anyone know where the hot water tank is in the 89 WB w/passenger side bathroom?


Here is a link to pics, interior and exterior:

https://drive.google.com/open?id=1D1...T0OTm07AT_zh4r
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  #2  
Old 09-14-2018
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Ernest Ekberg Ernest Ekberg is offline
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water heater is in back closet under floor. Have you tried to tighten those clamps?
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  #3  
Old 09-14-2018
TheNomadHorde TheNomadHorde is offline
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Yes, it’s not leaking from the water heater. That area is dry as are all the connections. The direct leak is above the tag axle in the floor. It only leaks when fresh water tank is full not when the tank is empty and we use just city water. Hot water tank runs fine and no leaks on city water connection.
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Old 09-14-2018
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I may have this wrong.
But,it only leaks when theres water in the tank.
You empty the tank and theres no leak.
Yet you say the tank is not leaking.
As Spock would say,thats illogical.
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Old 09-14-2018
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change out your sporlan valve- it is filling the tank to overflowing
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Old 09-14-2018
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Did your tank over flow when it filled (or overfilled)? If so are you on flat & level ground, sometime an over filled tank my siphon itself off a little if the nose of the bird is higher than the tail end.
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Old 09-14-2018
TheNomadHorde TheNomadHorde is offline
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The water system on city water has no leaks. The tank itself has no leaks, no holes, no cracks, no damage at all. The leak is coming from a connection outside the tank. When the tank is being filled, some connection under the floor away from the fresh tank is leaking. It’s being absorbed by the plywood on the driver’s side of the coach and coming up through the floor and leaking down to the tag axel area.

The overflow for the tank seems to drain fine without issue.

Where is the sporlan valve located? If it’s the one I’m thinking of it isn’t leaking either.
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Old 09-14-2018
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May be the overflow hose on the fresh water tank draining excess. I fill our tank until it overflows and drains on the pavement at the rear axle. Usually continues to drain for a couple of minutes after I stop filling tank.

Bill
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Old 09-14-2018
TheNomadHorde TheNomadHorde is offline
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Here are a few photos the floor drivers side of the bed, and of the pipes and the area above the tag.



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  #10  
Old 09-14-2018
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Have you physically felt around the over flow pipe/hose where it comes out of the tank? Or, the other possibility is that the tank itself is leaking somewhere on or near it's top side.
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