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07-31-2015, 03:17 PM
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#1
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2 Rivet Member
2008 27' Classic FB
Ontario
, Oregon
Join Date: Jan 2014
Posts: 32
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Smelly closet
I am getting a strong sewer smell emanating from my closet. We are boondocking with generator and air-conditioner running and it is pulling a sewer oder from the closet. I opened the hatch to see if there was any leakage, and there is a vent pipe from the shower directly under the closet floor. Anyone have any ideas what I should do?
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08-17-2015, 12:43 PM
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#2
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2 Rivet Member
2004 28' Classic
2003 25' Safari
Florence
, Oregon
Join Date: Apr 2015
Posts: 30
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Check your vent lines and look for any duct tape, especially where a light switch is. On my 2004, 28' Classic they drilled a hole for the light switch for the shower and put a hole in the vent line in the closet, covered it with duct tape.
Discovered this when I modified the kitchen sink drain to go into the black water tank instead of grey water.
Hope this helps.
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08-17-2015, 01:09 PM
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#3
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Rivet Master
1968 24' Tradewind
Oxford,
, Mississippi
Join Date: May 2009
Posts: 1,564
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Make sure there is water in all the P-traps in your drains. I had a similar problem a couple of times until I figured out that the bath tub drain trap was dry (we don't use the shower in the trailer). I put a plug in the drain and have not had the problem again. Hopefully your problem will be simple as that to fix.
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Bruce & Rachel
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68 Trade Wind
2001 Toyota Tundra
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08-20-2015, 12:00 PM
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#4
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2 Rivet Member
2008 27' Classic FB
Ontario
, Oregon
Join Date: Jan 2014
Posts: 32
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Smelly closet
Last week I opened the panel on the floor of the closet and removed the Anti-Siphon Trap Vent Device (ASTVD). I took it apart and put some non-stick silicone lube on the rubber gasket and reinstalled everything. We are a week into our latest excursion and everything is working well. When I get home I'm going to do the same thing to the ones under the kitchen and lav sink.
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08-20-2015, 12:46 PM
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#5
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Rivet Master
Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 16,497
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Quote:
Originally Posted by Shiloh4570
I am getting a strong sewer smell emanating from my closet. We are boondocking with generator and air-conditioner running and it is pulling a sewer oder from the closet. I opened the hatch to see if there was any leakage, and there is a vent pipe from the shower directly under the closet floor. Anyone have any ideas what I should do?
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Sewer vent pipe cover gaskets, only last 2 to 3 years.
Remove one of the polished vent pipe covers and you will find the answer for the smell.
Andy
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03-06-2016, 09:17 PM
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#6
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3 Rivet Member
2015 27' FB International
2011 25' FB International
Lafayette
, Louisiana
Join Date: Sep 2011
Posts: 218
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On my 2015 27fb I have the same strong sewer smell in the closet. (no smell under the closet) This happens when we travel down the hwy with sewer in the tanks. It is especially bad when the fantastic fans covers are open for cabin ventilation in hot weather. The dealer has looked at it twice and still have the problem.... may have to make the 1000 mile trek to Jackson Center. I don't think its from the grey tank... thinking it from the black tank. Next test is to drain just the grey tank and tow to check for smell. Any ideas?
__________________
"Ferdara" Mark and Michael Broussard-Hubbard
Aluminum pulling Aluminum 2018 F-150 4X4 Platinum, 3.5L V-6, 10 speed trans, 6.5 bed, Max Tow 3.55 Elec Locking axle, Roadmaster Active Suspension ~ 2015 Airstream Custom Ordered 27fb International Serenity - Lafayette Louisiana
WBCCI 11100
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03-07-2016, 09:14 AM
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#7
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Rivet Master
Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 16,497
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Quote:
Originally Posted by LaBigDogs
On my 2015 27fb I have the same strong sewer smell in the closet. (no smell under the closet) This happens when we travel down the hwy with sewer in the tanks. It is especially bad when the fantastic fans covers are open for cabin ventilation in hot weather. The dealer has looked at it twice and still have the problem.... may have to make the 1000 mile trek to Jackson Center. I don't think its from the grey tank... thinking it from the black tank. Next test is to drain just the grey tank and tow to check for smell. Any ideas?
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Check the sewer vent pipe cover gaskets that are on the roof. They are underneath the vent pipe covers.
Andy
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11-21-2020, 11:05 AM
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#8
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1 Rivet Member
1994 30' Excella
Taylor
, Texas
Join Date: Jun 2010
Posts: 9
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smell in closet ditto
Quote:
Originally Posted by Inland RV Center, In
Check the sewer vent pipe cover gaskets that are on the roof. They are underneath the vent pipe covers.
Andy
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What exactly is the issue with the gasket? Is the vent pick leaking gas back down the exterior penetration of the pipe I suppose. I've discovered the same smell in my closet and don't want to unnecessarily rip apart the close to find nothing really wrong. Im going to go look on the roof in the mean time.
Best regards.
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07-11-2022, 07:11 PM
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#9
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1 Rivet Member
1994 30' Excella
Taylor
, Texas
Join Date: Jun 2010
Posts: 9
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Still not getting it...
I believe Rivet Master is the master. However, I did look at the roof vent... and I dont believe the odors Im experiencing are coming back down the pipe at the roof gasket. Especially when we drive down the road... I do think that the air pushing down the vent is an issue, for sure, as all the devices to prevent the siphon are after the trap and are subject to the pressure of down the road air pressure issues, which no one has addressed.
BUT, I wonder this: My owner's manual shows the 3 vent devices, one at shower, kitchen sink and bathroom sink. Where is the one on the shower? Its not visible from the closet... Is there one, Perhaps behind the shower next too the P-trap?
My 1994 30" Excella has brother and sisters out there...does no-one have this issue of odor in the closet?
Thanks again in advance,,,,still looking for the cause.
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1994 30' Excella Classic
Taylor, TX
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07-11-2022, 09:12 PM
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#10
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3 Rivet Member
2007 25' International CCD FB
South
, South Dakota
Join Date: Sep 2007
Posts: 154
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We had similar problem turned out to be the black flow preventer for the black tank flush
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Richard (Dean) Tighe
W.B.C.C.I. 5617
2007 25' FB International CCD Solar
2019 Toyota Tundra
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07-11-2022, 10:11 PM
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#11
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3 Rivet Member
2007 25' International CCD FB
South
, South Dakota
Join Date: Sep 2007
Posts: 154
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This is what the culprit look like
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07-12-2022, 08:02 AM
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#12
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1 Rivet Member
1994 30' Excella
Taylor
, Texas
Join Date: Jun 2010
Posts: 9
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Back flow preventer...
Wow... YES! And where is that thing located? The back flow preventer...
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1994 30' Excella Classic
Taylor, TX
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07-12-2022, 08:48 AM
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#13
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1 Rivet Member
1994 30' Excella
Taylor
, Texas
Join Date: Jun 2010
Posts: 9
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Back flow preventer...
Oh never mind... Thanks. I have seen that thing... hmm... that's a lot of smell I got ... I wonder if its from that thing... and the bath sink is on the other side of the trailer too.. Will take a closer look. Stay tuned.
I'm such an idiot... of course the odor is not from the GREY tank.. duh!
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1994 30' Excella Classic
Taylor, TX
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07-12-2022, 10:39 AM
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#14
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3 Rivet Member
2007 25' International CCD FB
South
, South Dakota
Join Date: Sep 2007
Posts: 154
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It's located very near the flush inlet on the side of the trailer only on the inside mine was behind the closet
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07-12-2022, 11:15 AM
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#15
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1 Rivet Member
1994 30' Excella
Taylor
, Texas
Join Date: Jun 2010
Posts: 9
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Looks original ...
It is down low, against the wall behind the sink drain... yep! The back flow preventer looks original. Prolly needs a fresh up for sure. I guess odor and gasses build up pressure a bit and push their way out... no vent in the tank? No matter how many times Ive been on the roof its hard to remberbre all the protrusions.
Thanks for all the replies peeps! My tank is half full of water and Borax and soap currently and has NO smell at all... so... toilet removed, replacing fill valve with a a new one, and vinyl tiling the bathroom floor. I accidentally on purpose pulled the flush foot handle off the toilet... then saw it said DO NOT REMOVE! Wow,,, that was dumb. Finally got it back on and actuating correctly. Dont ever remove that thing..its tricky to get the spring just right and the screw on the thingy!
Think it through is the key.
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1994 30' Excella Classic
Taylor, TX
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07-12-2022, 06:30 PM
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#16
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4 Rivet Member
2021 27' Globetrotter
Malibu
, California
Join Date: Dec 2020
Posts: 400
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I know what this is related to, and it’s an easy fix (at least in my case):
You are creating a vacuum inside the Airstream by having the fan on without fresh air coming in through the windows. It’s hard to sometimes make the air circulate. So before the AC is turned on the air pressure inside the Airstream needs to equal the outside pressure, otherwise air flows back inside trailer through the various sinks (ie grey tank)
I encountered the same issue with my closet smelling funny, but then realized what I was smelling was the grey tank. I closed all the sinks, turned the fan on and opened a few more windows and the problem was gone.
It happened to me on very hot days.
I hope this is your fix, otherwise the other comments are spot on.
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