Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > RV SYSTEMS AND TECHNOLOGIES FORUMS > RV Systems & Appliances
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 09-08-2022, 06:54 AM   #1
Junior Member
 
Join Date: Sep 2022
Posts: 3
Sewer odor from gray tank

I have been searching the forums for sewer odors and most threads refer to evaporated P traps. My issue is not caused by lack of usage. I get these odors occasional under the kitchen sink, shower drain and currently in my washing machine closet. We are new to living in our rv so please be patient with my lack of knowledge. Yesterday I did laundry and part way through the first load, the odor was slightly noticeable. By the end of the third load of clothes it was unbearable. That was 12 hours ago and I get up this morning to find it is still present. Since all my plumbing is used on a regular basis, could it still be a P trap issue or something else?

We have a 2014 Tradition DVR
Kjohn7215 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 09-08-2022, 07:23 AM   #2
Senior Member
 
dizcom's Avatar


 
Freightliner Owners Club
Holiday Rambler Owners Club
Join Date: Jun 2021
Posts: 1,629
Smells like these can be hard to track down. It sounds like you might have a vent that isn't doing what it's supposed to. When you were doing laundry, was the smell coming from the washing machine or under the sink? Start with where the small is and check out everything there. It's a fairly straightforward system with very few parts. The fix will eventually be quite simple. What makes it hard is that smells can show up in places that are not their sources. There are some other things to try, but start with the physical parts to see if they are all doing what they're supposed to and nothing is leaking. Good luck.
__________________
2021 Holiday Rambler Armada 44LE
2021 Jeep Wrangler High Altitude toad w/Ready Brute Elite II
dizcom is offline   Reply With Quote
Old 09-08-2022, 07:25 AM   #3
Community Administrator
 
Lt Dan's Avatar


 
Tiffin Owners Club
Join Date: Sep 2013
Location: DFW, Texas
Posts: 16,656
First off, Welcome to IRV2!

Look for what's called an AAV (Air Admittance Valve) high up in the plumbing line. It will look similar to below and it's there to allow air into the drain line. The flapper valve inside is notorious for failing and allowing sewer fumes back into the house.
Attached Thumbnails
Click image for larger version

Name:	AAV.jpg
Views:	9
Size:	29.6 KB
ID:	375832  
__________________
2017 Phaeton 40IH XSH Maroon Coral - Power Glide Chassis with IFS
Previous '15 Tiffin Allegro RED 38QRA and '06 Itasca Sunrise 35A
'16 Jeep JKU Wrangler Sahara or '08 Honda Goldwing
Lt Dan is offline   Reply With Quote
Old 09-08-2022, 07:26 AM   #4
Senior Member
 
Old-Biscuit's Avatar
 
Join Date: Nov 2015
Posts: 23,685
Air Admittance Valves (AAV) on drain lines AFTER the 'P' traps
They open when draining to prevent 'P' traps from getting sucked dry
But they are cheap junk RV MFGs buy by the 10,000's and fail

Black device hand screwed onto a stub pipe
Any Hardware Store $9------better quality ones available for $$
__________________
I took my Medication today. HAVE YOU?
Dodge 3500 w/Tractor Motor & NUWA 5vr
US NAVY---USS Decatur DDG-31
Old-Biscuit is offline   Reply With Quote
Old 09-08-2022, 10:40 AM   #5
Moderator Emeritus
 
TXiceman's Avatar


 
Ford Super Duty Owner
Join Date: Aug 2000
Location: Bryan, TX when not traveling.
Posts: 22,344
Blog Entries: 21
Replace the AAV with a better-quality device. As for the washer drain, if it is not in use, simply tape it closed or cap it.

The gray tank can smell as bad or worse than the black tank.

Ken
__________________
Amateur Radio Operator (KE5DFR)|Full-Time! - 2012 6.7L Ford Crew Cab Dually -2013 HitchHiker Champagne 38RLRSB - Currently FOR SALE Travel with one Standard Schnauzer and one small Timneh African Gray Parrot, retired mechanical engineer
TXiceman is offline   Reply With Quote
Old 09-08-2022, 11:16 AM   #6
Senior Member
 
Marine359's Avatar
 
Join Date: May 2021
Location: Asheville, NC
Posts: 1,329
Great advice above.
But, An ounce or prevention is worth a pound of cure.
Most gray tank odors originate from decomposing organic matter like food particles entering the gray tank from one of the sinks. Hair into the tank, from shaving face or legs can also start to decompose. Beverages with sugar or carbs are bad news. In other words, (pretty much) if it ain’t nearly clean H2O, don’t allow it to get into the gray tank. Flush all that other stuff down the toilet. Once a year, it’s also a good idea to introduce a small amount of diluted bleach into the gray tank. Being careful not to allow it to sit in traps, so chase with lots of water, at least 10 gal. Drive around to slosh the tank, and dump. We’ve been doing this for 40 years, and have never had gray tank odors. If you have a washing machine, you may need to disinfect and flush the tank more often.
__________________
Jim. 2021 Canyon Denali 4x4 3.6L, Husky C-Line
2021b Micro Mini 2108DS, 170AH LiFePo4, Xantrex XC2000, Victron 75/15 & 100/30, Champion 2500w df
Marine359 is offline   Reply With Quote
Old 09-08-2022, 03:53 PM   #7
Junior Member
 
Join Date: Sep 2022
Posts: 3
Thank you. The smell was coming out of the drain hose so at least we do have a starting place.
Kjohn7215 is offline   Reply With Quote
Old 09-08-2022, 03:55 PM   #8
Junior Member
 
Join Date: Sep 2022
Posts: 3
Thank you. I’m assuming we need to take the panel off the wall to look for one by the washing machine drain.
Kjohn7215 is offline   Reply With Quote
Reply

Tags
gray tank, odor, tank



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Gray Tank Odor slabman Newmar Owner's Forum 1 07-17-2016 10:55 AM
Gray Tank odor when on the road. Bludiver Class A Motorhome Discussions 23 10-19-2015 07:09 PM
Gray Tank Odor coming from laundry question brobox Entegra Owner's Forum 52 09-22-2015 09:26 AM
Black & Gray Tank Odor tmcmillanb Travel Supreme Owner's Forum 2 11-01-2014 11:04 AM
Gray Tank Odor - Help! mrsr71 Winnebago Industries Owner's Forum 5 11-19-2005 08:28 AM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 01:51 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.