The toilet behaved... the rest of the plumbing.... - Fiberglass RV


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Old 09-17-2007, 08:34 PM   #1
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OK, here is a timeline.. all you X purts out there put your heads together and point me in the right direction..

I have a huge problem with water backing into my shower after about a gallon of water goes into the gray tank. It was a little at fist, but now it is impossible.

Here is what we all tried to do at the mtn. Ranch rally to get me up and running again... none of it worked.

The thing acts like the Grey tank is full, but we all know its empty. You can hardly get anything in it.. from the drains..the first thought was the vent was clogged so....

We jambed a hose down the vent and tried to rotor rooter from the top. No clog. So, on goes the water and we try to blow out from the top. The grey tank filled and eventually, as you would expect, the drains spit water up in all the sinks and showers.

Hmnn... drain the tank, which is now REALLY full, try again from a faucet.. a gallon or so goes in, and water comes up the shower.

So, we drain again, and get the trickle you would expect.. everyone them jumped in the trailer and we all "manned" a drain, keeping it plugged while water went down one of the kitchen sinks. We actually got the tank to fill again that way, and managed to get water to come out of the vent.. but... no small animals, old Kleenex or anything else unsavory come out. (At one point, a couple sticks that looked like knitting needles jumped out of the kitchen sink.. probably someones miniature Kabob gone astray...)

So, Try running water as normal again, and sure enough, the shower fills up in no time. ARRRGGHHH!!!

Next, we try back flushing.. everyone on a drain, Linda holding the broken dump cover on while the hose is filling from the DRAIN side. Once again, we get is pressurized enough to get water to come out the vent.. but still, nothing unsavory dislodges.

In between these games of drain twister, the tank sat overnite with Baking soda in it, and we dumped a bottle of orange cleaner, and Dawn dish washing soap in, thinking it was grease that had filled the tank and it had no capacity left.

Since it can be filled from everywhere else but a drain INSIDE the trailer, that seems unlikely. We got gallons and gallons to come out after we filled from backflushing or from the vent.

None of this has done anything but spring a new leak UNDER me sink, which I have not found the source of yet. I am pretty sure it's a loose city connection.. but we will see.

After everyone left, I messed around with changing the level of the trailer.. that did nothing either.

I give up.. where now?
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Old 09-17-2007, 08:40 PM   #2
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Sorry Gina but i can't help myself.Buy a New Escape.


I never heard of a problem like that.
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Old 09-17-2007, 08:58 PM   #3
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Hi: Yepper I second the "Escape plan" If my water supply can be plugged by one lousy Earwig ... Yours can too !!! Tank Theory...for water to go in air must come out!!!
Alf S. North shore of Lake Erie
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Old 09-17-2007, 09:24 PM   #4
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Quote:
I give up.. where now?
Put the trailer on a lift, and drop the tank?
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Old 09-17-2007, 10:46 PM   #5
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....sorry to say this but, loose the new Egg and go back to the "Cuteness Factor" (13footer minus the luxuries of the big brother), you are experiencing issues VERY common to other trailer with the built in 'nicities'. YES thay can be overcome but prolly WILL return
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Old 09-17-2007, 11:01 PM   #6
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I am not going to throw the baby out with the bathwater...

even if the bathwater won't drain.
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Old 09-17-2007, 11:25 PM   #7
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Burp the baby.
You have air trapped in the tank.

I added a vent to the top of my tank across to the bathroom sink air vent. Worked great.
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Old 09-17-2007, 11:59 PM   #8
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I don't have a bathroom in the Scamp so not really one to help, but Mike hit exactly what I was thinking when I first read this. Like in your house plumbing when they forget to put in a vent stack, your tub drains really slow and backs up sometimes. (really happened on a new house awhile back) I'll bet he's nailed it....
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Old 09-18-2007, 12:09 AM   #9
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If it's an air lock wouldn't opening up the dump valve and removing the drain cap cure it enough to test the theory? That's assuming you're someplace you can let the water run out or at a dump station.

My gray water tank has a very simple vent. A short piece of hose comes out of the top into a storage area and then back down and out the bottom of the trailer. It also works as an overflow.
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Old 09-18-2007, 12:25 AM   #10
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I'm with Frederick: drop the tank.
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Old 09-18-2007, 08:30 AM   #11
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I've spent all night awake trying to figure this out , but I don't believe I've got it.

If you can fill the tank from the sink, maybe there is an obstuction in the P-trap or beyond in the shower drain? I use a rubber stopper in the drain when I'm on the road, as a rule, but I know that the stopper is of a diameter that will probably slip further down the drain if I push on it even a little bit. Could there be an obstruction like that that has traveled down the pipe past the P-trap?

Since it is a Burro maybe there is a medical term for this. Take it to a vet?
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Old 09-18-2007, 09:38 AM   #12
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I cannot fill the tank from any of the sinks or the shower.

The only way the tank gets full is to dump in from the vent, or from the dump valve side.

I was in a spot where water could be dumped easily. I filled the measly amount of "gray" dirty water into my portables and then we could freely dump clean on the ground.

I have the worlds cleanest Grey tank now.. but it appears to want to stay that way.

Trapped air was everyones first concensous, but, it doesn't seem to be the case. At least, we did all the proper steps to eliminate it. An obstruction is still a possibility, for sure, but no one can figure out why you can get water to freely flow in one direction, but not the other. That brings you back to air..

but.. you would have thought we burpped until dawn!
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Old 09-18-2007, 10:05 AM   #13
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Gina, is there a check valve of some sort in your gray tank vent tube? My Airstream was plumbed that way. If it's sticking, that would account for your symptoms.

Roger
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Old 09-18-2007, 10:16 AM   #14
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I do not know. Where would I look and what would I look for?
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