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Old 06-21-2015, 06:05 PM   #1
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Stinks in RV

Need some ideas on what to do about bad odor in rv. Have replaced all vents inside trl ,flushed black tank for 1 hr,checked all valves to make sure they were closed still Stinks
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Old 06-21-2015, 06:12 PM   #2
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Wife just reminded me that when the front air is turned on, smell gets worse
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Old 06-21-2015, 06:14 PM   #3
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Need some ideas on what to do about bad odor in rv. Have replaced all vents inside trl ,flushed black tank for 1 hr,checked all valves to make sure they were closed still Stinks
dblcruzin
Do search on here on iRV2 for "sewer smell"... (that subject has been extensively discussed for years).
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Old 06-21-2015, 06:25 PM   #4
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Check your house batteries as well- if your batteries are being boiled by overcharging, the hydrogen sulfide emitted will smell a lot like sewer stink.
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Old 06-21-2015, 06:27 PM   #5
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New to you trailer, or just now having the problem? The gray tank can get pretty stinky also...
What 'vents' have you replaced?
If the smell is worse with the ac on, might go up top and take the cover off and look it over for mold/trapped dirt, etc.

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Old 06-21-2015, 06:53 PM   #6
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I believe we guessed at the nature of his smell. I do not recall a description from the OP.

If it is sewer gasses, all advice so far is good.

If it is mold, or the results of vermin or dead vermin, some activity would be different.

I the Southwind I am currently rebuilding, there was food in refer for several years. Talk about stink?!

I was given good advice to use an ozone generator. It is a technology that I was unfamiliar with, but I asked on this forum about the stink in the refer in the thread labeled 'spoiled food' and got great ideas about getting rid of that stink.

So, it is in the hands of the OP to give us more details. He also has to open that air conditioner, to see if there is a dead mouse or mold in it, or some other issue. I would further suggest opening all areas, used or unused, to see if there is a local source, other than the tanks. (Including the compartment the tanks are in, behind the sinks, under the cabinets, behind the shower, etc.)

Identify what can be identified, and then use the Ozone generator.

Good luck.
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Old 06-21-2015, 07:38 PM   #7
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Get on the roof and remove the holding tank vents from the roof to make sure that the pipe is indeed completely through the roof decking. Holding tank odors may be escaping into the "attic" area of the roof as well as into the ac ducting if the pipe(s) do not extend beyond the roof.
Often times the vent pipes are cut off too short and/or do not extend through the roof decking. The cap is installed yet the pipe is not properly venting the odors properly.
If the pipe does not extend above the roof, extend it. At the same time, check to make sure any void is filled around the pipe where it protrudes above the roof decking.
Otherwise, since you have check all of your AAV around your traps at the shower and sinks and they are not stuck open, I can't imagine where the odor is coming in from. Good luck.
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Old 06-21-2015, 09:27 PM   #8
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Have you cleaned the AC filters?
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Old 06-22-2015, 10:47 AM   #9
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I've had a stinky trailer twice. The first time was at an RV park where I was disposing of the tied doggy bags in the RV trash can. When I first noticed the smell, I didn't make the association until I bent over to pick up after the dog on the next trip out and the smell was familiar. Used an outside trash can after that.
The second time we thought we had a dead rodent under the kitchen counter until someone posted about a stinky sink trap. Used gray tank deodorizer and the problem was fixed.
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Old 06-22-2015, 12:30 PM   #10
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Maybe if we can get a better clarification by the OP of what they mean by "stinks" & "bad odor". We're all guessing at what it might be. What if it's nothing to do with the mechanics of the RV? Maybe there's something dead somewhere.

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Old 06-22-2015, 10:52 PM   #11
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Not new to me bought new. Sewer odor started a month ago the vents that were replaced were the air vents under cabinets ran the leak test no toilet ,filled with water let set all day no water lost, came back to trl later today ,turned on sec a/c ,in about 10 min. Sewer smell checked a/c not coming out of it am running out of ideas. And DW is running out of patience
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Old 06-22-2015, 11:14 PM   #12
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I had a smell in our MH for several years off and on. I read all the posts about plumbing and vents and tanks. It would come and go, very frustrating. I think I just found out, by accident, what it has been this whole time. Next to our toilet is a space in the wall where the vent pipe for the black tank goes up to the roof. Inside this space is the vacuum break and check valve for the black tank flush system. Every so often I would find water in one of our basement storage bays. It was clean water because it didn't smell or taste funny, but I could determine where it was coming from. One day I was rinsing the black tank and noticed water leaking from under the MH. This lead me to the flush plumbing in the bathroom wall. Removed the panel and found the vacuum break not sealing and the check valve rusted in the open position. It appears the smell was coming from the black tank through the flush plumbing.
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Old 06-23-2015, 08:30 AM   #13
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I had a smell in our MH for several years off and on. I read all the posts about plumbing and vents and tanks. It would come and go, very frustrating. I think I just found out, by accident, what it has been this whole time. Next to our toilet is a space in the wall where the vent pipe for the black tank goes up to the roof. Inside this space is the vacuum break and check valve for the black tank flush system. Every so often I would find water in one of our basement storage bays. It was clean water because it didn't smell or taste funny, but I could determine where it was coming from. One day I was rinsing the black tank and noticed water leaking from under the MH. This lead me to the flush plumbing in the bathroom wall. Removed the panel and found the vacuum break not sealing and the check valve rusted in the open position. It appears the smell was coming from the black tank through the flush plumbing.
Belgian
Thanks for that informative post.
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Old 06-23-2015, 08:37 AM   #14
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Yes , thank you Belgian for posting that. Here's a photo of a vacuum breaker for those who haven't seen one.
Click image for larger version

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