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07-30-2018, 03:33 AM
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#1
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New Member
Join Date: Nov 2010
Posts: 2
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Unexplained odor
My Rialta is almost 20 years old. There's nothing in the sewage tank, I've drained water out of tanks. There's this funky sewage odor that I can't get rid of. The stack on top is not stopped up. It comes and goes. Any suggestions on what I need to do. Excuse me if I don't use the correct terminology. All I ever had to do was pack and I don't know much about maintenance on my RV, my husband did that and he died. I'm not ready to stop traveling in it.
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07-30-2018, 03:49 AM
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#2
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Platinum Member
Join Date: Feb 2015
Location: Chaska MN
Posts: 1,763
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This may seem like a dumb question... but is there any water in the toilet bowl? If not, it WILL stink up the place.
Or it could even be coming from the gray tank. They can get pretty funky smelling too.
I always used Happy Camper in both tanks to control the smell.
__________________
2021 Promaster 1500 118wb conversion
2019 Roadtrek Simplicity SRT (almost a Zion)
2015 Roadtrek 170
2011 LTV Libero
2004 GWV Classic Supreme
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07-30-2018, 04:02 AM
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#3
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New Member
Join Date: Nov 2010
Posts: 2
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Yes there's water in the toilet bowl. I drained all water from the gray tank and then put more in with some stuff I bought at Walmart to help with odor from the gray tank.
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07-30-2018, 04:24 AM
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#4
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Site Team
Join Date: Jul 2013
Posts: 5,424
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Assuming you have water in all the sink traps, then you must have a plumbing leak somewhere. A properly-sealed system will have no odor at all. No need for chemicals.
__________________
Now: 2022 Fully-custom buildout (Ford Transit EcoBoost AWD)
Formerly: 2005 Airstream Interstate (Sprinter 2500 T1N)
2014 Great West Vans Legend SE (Sprinter 3500 NCV3 I4)
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07-30-2018, 04:46 AM
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#5
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Platinum Member
Join Date: Dec 2017
Location: Arizona
Posts: 1,215
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Part of that system usually includes an anti-siphon trap valve under the bath sink. It's like a PCV for the plumbing system and allows air in but not out. The spring/diaphram can become non functional over time. Had a relative that had this happen. He couldn't figure out the source of the odor and that was it. On his and my sink there is a vertical pvc pipe that is about 8" tall beneath the sink. It's topped with a black cap. The cap is the valve. Worth a look.
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07-30-2018, 08:14 AM
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#6
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Platinum Member
Join Date: Feb 2016
Location: Portland, Oregon
Posts: 3,273
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If you have any rubber hoses in your waste system see if they are in good condition, time will take a toll on them. In the boating world it is normal maintenance to replace large rubber hose connecting a toilet to its waste tank every few years, these hoses will deteriorate in time. Take a wet rag - wipe a hose and test it for odor.
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07-30-2018, 03:35 PM
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#7
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Platinum Member
Join Date: May 2016
Location: East
Posts: 2,483
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.
Check the flange between the toilet and the floor.
__________________
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07-30-2018, 03:43 PM
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#8
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Platinum Member
Join Date: Jan 2012
Location: Smyrna, TN
Posts: 584
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Post #5 is not what you have behind your toilet. See photo below. This was not my Rialta but you can see where the toilet leaked and stained the plywood. This could be the odor you are smelling. Also the shower drain trap may not have water in it (located in the floor shower pan.
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08-05-2018, 07:41 AM
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#9
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Platinum Member
Join Date: Jun 2017
Location: Oregon, Washington, Arizona and California
Posts: 245
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I will second BBQ's comment. RVs can have a foam rubber gasket under the toilet that can crack when it gets old. It's easy to replace if you're handy, and not an expensive job if you're not.
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08-05-2018, 05:09 PM
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#10
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Bronze Member
Join Date: Dec 2014
Location: Beautiful Colorado
Posts: 46
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Sometimes the gray water holding tank can stink worse than the black.
Put a teaspoon of liquid holding tank treatment, like Thetford Aqua-Kem, down each of the sink drains and run a bit of water. (Shower drain too if you use your shower.)
Hopefully that will help.
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08-05-2018, 05:27 PM
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#11
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Site Team
Join Date: Jul 2013
Posts: 5,424
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Quote:
Originally Posted by ballbraindogs
Sometimes the gray water holding tank can stink worse than the black.
Put a teaspoon of liquid holding tank treatment, like Thetford Aqua-Kem, down each of the sink drains and run a bit of water. (Shower drain too if you use your shower.)
Hopefully that will help.
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This is good advice as a stop-gap measure. But, as I say, a properly-functioning plumbing system will not smell--black or gray. Chemicals are a palliative and not normally necessary. Best to find and fix the leaks and keep your traps full.
__________________
Now: 2022 Fully-custom buildout (Ford Transit EcoBoost AWD)
Formerly: 2005 Airstream Interstate (Sprinter 2500 T1N)
2014 Great West Vans Legend SE (Sprinter 3500 NCV3 I4)
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08-05-2018, 06:48 PM
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#12
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New Member
Join Date: May 2018
Location: Denver, CO
Posts: 13
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Keep on traveling! I’m a widow of 4 years and I’ve chosen to continue to travel in a class b Van and now b+ RV. I learn more every time I take it out, especially from my mistakes! You go girl!
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08-05-2018, 06:51 PM
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#13
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Platinum Member
Join Date: Oct 2006
Location: New Brunswick, Canada
Posts: 8,828
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An older RV is likely to have a toilet with an overflow hole located near where water enters the toilet bowl. Think of it as another P trap that needs to have water in it to seal the system. If there is no water in that overflow tube (it could have evaporated or been siphoned out) then odors will escape up and into the RV.
Some water should divert into the overflow hole when water is entering the bowl but it could evaporate if the toilet hasn't been used in while.
fwdanielson posted that photo of the stink tube here: http://www.classbforum.com/forums/f8...inks-5628.html
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08-05-2018, 09:40 PM
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#14
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New Member
Join Date: Jun 2015
Posts: 5
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Odor
IF you have a Rialta, chances are, the odor you are experiencing is a GAS leak. The leak is too small for the detector to sense it but the mercaptan smell manifest itself more readily with our sense of smell. Even using a sensitive gas leak detector WILL NOT reveal the source, only a bubble test will reveal the source. On my unit, the leak was a loose fitting to the furnace. Remove the cover, i believe there are 3 or 4 cover screw, and use a soap solution...2 teaspoon of liquid dish soap in a liter of water in a spray bottle. Spray all of the compression fittings you see and bubbles will form where there is a leak. Also check all fittings leading up to the stove, and make sure the stove control is OFF. Good luck
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08-05-2018, 09:47 PM
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#15
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New Member
Join Date: Jun 2015
Posts: 5
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Also, you might want to check out the forum site of a group of Rialta owners, plenty of help dedicated solely for Rialta. Seach for IOgroup rialta.
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08-05-2018, 10:01 PM
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#16
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Silver Member
Join Date: Apr 2018
Location: SoCal
Posts: 57
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It could be the smell of rotting rubber elbows in the waste plumbing..
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08-05-2018, 10:47 PM
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#17
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Platinum Member
Join Date: Jul 2018
Location: Texas
Posts: 2,651
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Quote:
Originally Posted by GladysMae
I don't know much about maintenance on my RV, my husband did that and he died. I'm not ready to stop traveling in it.
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Quote:
Originally Posted by nnewman
Keep on traveling! I’m a widow of 4 years and I’ve chosen to continue to travel in a class b Van and now b+ RV. I learn more every time I take it out, especially from my mistakes! You go girl!
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Gladys. First, welcome to the forum. My condolences on your loss.
By all means, keep traveling as nnewman suggests. Keep on until you decide it's no longer your thing. You probably know more than many of us about traveling in an RV, and for the rest, each of us has our own puzzling problems from time to time so you're not alone on that.
Maintenance and repairs are the unpleasant part of rv'ing, but soon forgotten when you find that next perfect camp site or thing of beauty to admire. In the meantime, find a reputable and cheap rv shop in your area (just kidding about the cheap part, there's no such thing ) for repairs you need help with.
For all else, you have this forum, Youtube, and facebook groups where you'll find good help. My theory is, if something's already broken, I can't hurt much by trying to repair it myself. So far, with the sources of help I listed above, I've been able to avoid the blood-sucking $130/hr. rates charged at my local rv shops.
Safe travels!
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08-06-2018, 12:14 AM
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#18
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Gold Member
Join Date: Feb 2017
Location: Los Angeles, CA
Posts: 97
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Lots of good advice here.
If you decide to check for a very small propane leak, a pressure test is a good place to start. GuyPresse has some youtube videoes that decribe how to make a u-tube manometer to check for a slow leak.
You could also have accumulated waste in the tank. Dump about 5 gallons of water down there and let it set for a few days. Drive around a bit. Dump the tanks and see if you are getting any brown material. If you are, then repeat until clean. Getting a clear sewer elbow helps with seeing what’s coming out.
Checking for a dried up foam seal under the toilet is the first thing I would check though.
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08-07-2018, 04:32 PM
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#19
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Silver Member
Join Date: Sep 2016
Location: Ontario
Posts: 67
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Give things a really good flush
I agree 100% with the other advise. The only thing I didn't see was to give things a REALLY good flush. Drag a hose into your RV and run a ton of water through your drains while dumping both gray and black - preferably when you don't have a line behind you . We have an advantage here - we have a sewage drain at our house. Our van can go from pretty funky to smelling like a rose from this alone. Its also nice to actually see the black tank register as empty! Good luck!
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08-10-2018, 01:12 AM
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#20
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New Member
Join Date: May 2018
Location: CA
Posts: 11
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I'm not sure if this is gentle enough for your system; but on another thread I learned the following for my Roadtrek: a cup to a half gallon Clorox with plenty of water and drive to slosh it around a bit. Drain. Add more water and 3 capfulls of Downey Fabric Softener to make the inside of tank slippery and to help with the smell. It worked like a charm for me.
Others may want to comment on whether this is too harsh; it worked for me.
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