Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-20-2014, 06:18 PM   #1
Winnebago Camper
 
Join Date: Nov 2012
Posts: 35
Black Water Tank Odor

I hope that someone can aim me a helpful direction.

A new conundrum for our 04 Journey 39W
When parked, everything works up to spec.
As soon as we start travelling at speed, we are subjected to a black water tank odor. Over time, it gradually diminishes, but does not always disappear completely.
The odor is emanating from the area behind the cabinet which is prepped for a washer/drier. I have removed the back panel of this cabinet. All pre-piping for addition of a washer/drier appears to be in good, originally installed shape. The odor is strongest at the bottom of this area, but I figure that it would be, regardless of the source of the gas leak since it would be heavier than air. Black tank vent, itself, is clear and everything visible behind the narrow cabinet housing the water connections appears to be in good shape.

Access to the black tank vent piping seems to be limited, but I've inspected all that I can.

Anyone have any suggestions? Strange that "at rest" all is well, but under way this problem occurs.

Thanks,
Ron
__________________
'04 Journey 39W
'02 CRV
rogo88 is offline   Reply With Quote
Old 09-20-2014, 06:35 PM   #2
Winnebago Owner
 
Bumps's Avatar
 
Join Date: Sep 2013
Location: FTer Class of 2015 Origin: Evergreen, Colorado
Posts: 112
Is the drain pipe that is prepped for the washer capped-off? If not, is there a p-trap? If a p-trap, is there water in it? (There should be). You may need to pour a couple cups of water (or red-stuff-antifreeze, this time of the year) down there. That drain pipe is a straight shot to the grey tank -- a cap or a p-trap with water will block the fumes. \ken
__________________
Ken & Deb (WIT Club, FMCA, SKP, Harvest Hosts, and grateful volunteers with SOWERs)
2005 Winnebago Vectra 40FD w/400ISL and Allison 3000MH on Freightliner's Evolution chassis, Onan QD7500, 1000w Renogy solar, BlueOx tow gear, and 2015 Cherokee TrailHawk toad.
[SIGPIC][/SIGPIC]
Bumps is offline   Reply With Quote
Old 09-21-2014, 08:18 AM   #3
Winnebago Owner
 
lajuene's Avatar
 
Join Date: Feb 2008
Location: Hometown is Schenectady, NY
Posts: 222
It sounds like you are talking about the gray tank if it's under the washer/dryer area. I think the gray smells worse than the black anyway. if there is a standpipe and you don't have a washer installed then you should cap it off. Then there would be no place for the oder to come in.
__________________
Ginny & Eric - Full Time 4/14/12 - Our Blog "Walk About With Wheels"
[SIGPIC][/SIGPIC]
2004 Winnebago Vectra 40AD - 350 Cummins ISC; Toad 2012 Wrangler 6 speed
SKP, WIT, FMCA, FCOC, GoodSam, Cummins Power Club
lajuene is offline   Reply With Quote
Old 09-21-2014, 08:59 AM   #4
Registered User
 
mel s's Avatar
 
Join Date: Mar 2010
Posts: 340
Quote:
Originally Posted by rogo88 View Post
A new conundrum for our 04 Journey 39W
When parked, everything works up to spec.
As soon as we start traveling at speed, we are subjected to a black water tank odor. Over time, it gradually diminishes, but does not always disappear completely.
The odor is emanating from the area behind the cabinet which is prepped for a washer/drier.
Anyone have any suggestions? Strange that "at rest" all is well, but under way this problem occurs.
Thanks,
Ron
Ron
I believe you are "sniffing up the wrong tank".
Few washer drains (if any??), are plumbed into the black tank.....(in most RVs the "washer drain" is plumbed into the gray tank).

As has been suggested make sure the washer drain p-trap has water, (or RV anti-freeze), in it.
If it is dry, (and IF your washer standpipe is plumbed to either waste tank), any "negative pressure" in the RV cabin, (created by driving with windows and/or roof vents open while driving... and by running a vent fan when stopped), can and will draw "tank odor" into the RV.

BTW, in some RVs , (like my Safari), the washer does not drain into either waste tank.... (it flows directly out the 3" sewer hose connector).

Mel
'96 Safari
mel s is offline   Reply With Quote
Old 09-21-2014, 11:02 AM   #5
Winnebago Camper
 
Join Date: Nov 2012
Posts: 35
I thank you all for your responses.

I believe the washer prep piping is intact as it should be and capped. I'm pretty sure that the odor is coming from the black tank. I figured that the washer prep piping has to have a vent and that it was connected to the common roof vent serving both black and grey water systems. So I thot' there was a vent interconnection somewhere allowing the black water odor to back up into the washer piping.

Would be nice if things were a bit more accessible.

Thanks again,
Ron
__________________
'04 Journey 39W
'02 CRV
rogo88 is offline   Reply With Quote
Old 09-21-2014, 12:17 PM   #6
Winnebago Master
 
Join Date: Sep 2005
Posts: 962
I have the same rig ... is the odor worse on those occasions where you dump just before you get underway?

If I don't flush my sewer hose thoroughly ... I get an odor coming up into the bathroom area after dumping and stowing

Just a thought
skigramp is offline   Reply With Quote
Old 09-21-2014, 02:05 PM   #7
Winnie-Wise
 
Tom-NC's Avatar
 
Join Date: Dec 2002
Location: Murphy, NC, USA
Posts: 291
Hi,

Do you leave water in your toilet bowl to keep gasket there moist and make a good seal?

Do you leave your roof vent open that is near to the vent stack for the black tank? Is the smell coming from the vent on the roof when you are traveling?

Where are you stowing your sewer hose? I stow mine in a 4" pipe that I mounted outside under the coach.

Hope this helps.

__________________
2014 Winnebago Adventurer 35P,Ford F-53, V-10
2011 Ford Escape,2000 Roadmaster Tow Dolly
"Have a Great Day, Enjoy RVing."
Tom-NC is offline   Reply With Quote
Old 09-22-2014, 04:45 PM   #8
Winnebago Camper
 
Join Date: Dec 2013
Location: Florida Panhandle
Posts: 10
We have had the same issue with incredible odor coming from our 2014 Itasca- come to find out when this coach was made there was no p- trap installed under shower- as there is no room to install a regular p- trap now-- Winnebago has told CW to install a waterless p-trap---once again we are in the shop....
__________________
D&J
2014 Itasca Meridian 40U
Retiredx2 is offline   Reply With Quote
Old 09-22-2014, 05:40 PM   #9
Winnebago Camper
 
Join Date: Jun 2011
Location: Wisconsin
Posts: 27
I had odor in coach that drove DW crazy.
At each sink and behind the washer/dryer are some vent caps mounted quite high in the space.
The valves fail and odor escapes. Mine are on the Grey tank .
Some folks say Grey tank odors seem worse than black
Search home depot for link below.
Recommend replacing all of them. You will be a hero. Good Luck! Price is reasonable.

http://www.homedepot.com/p/Oatey-1-1...9012/100204205

Best wishes
__________________
2002 Itasca Sunrise 34D, Allison 1000, 8.1 GM
mx08453 is offline   Reply With Quote
Old 09-22-2014, 06:54 PM   #10
Winnie-Wise
 
Tom-NC's Avatar
 
Join Date: Dec 2002
Location: Murphy, NC, USA
Posts: 291
The last 2 posts have to do with grey water tank and not black water tank as originally asked about.

I have a 2014 Adventurer and there is a p trap under my shower so can't understand why there isn't one on yours.

The vents under the sink seldom go bad however if they were bad they probably wouldn't open thereby the water in the sinks would not go down unless they are stuck open.

If I had the cash I would go for the waterless traps but I bet they would malfunction at one time or another.

Lets hope that we are on the same page and the problem is with the black tank and not the grey tank.
__________________
2014 Winnebago Adventurer 35P,Ford F-53, V-10
2011 Ford Escape,2000 Roadmaster Tow Dolly
"Have a Great Day, Enjoy RVing."
Tom-NC is offline   Reply With Quote
Old 09-22-2014, 09:02 PM   #11
Winnebago Camper
 
Join Date: Jun 2011
Location: Wisconsin
Posts: 27
Sorry, I understand that you feel it is black water. My point is that Grey smells nearly as bad as black and there are many more opportunities for the Grey smell to get in the cabin, expecially in the area you are talking about.
A bad cheater valve will not likely slow drains.

A search of the forums, will yield many comments about similar complaints.

I found mine by opening the vanity doors below the sink and sniffing the air. Also had a bad one under the kitchen sink and later smell came out of the washer dryer cabinet area. I have a Itasca, but a RV buddy had similar experience in Allegro coach. Happy hunting. ....
__________________
2002 Itasca Sunrise 34D, Allison 1000, 8.1 GM
mx08453 is offline   Reply With Quote
Old 09-22-2014, 09:18 PM   #12
Winnebago Camper
 
Join Date: Jun 2011
Location: Wisconsin
Posts: 27
Here is a link to recent posts,,,, http://www.irv2.com/forums/showthread.php?t=220580
__________________
2002 Itasca Sunrise 34D, Allison 1000, 8.1 GM
mx08453 is offline   Reply With Quote
Old 09-23-2014, 09:44 AM   #13
Registered User
 
mel s's Avatar
 
Join Date: Mar 2010
Posts: 340
Quote:
Originally Posted by mx08453 View Post
Sorry, I understand that you feel it is black water. My point is that Grey smells nearly as bad as black and there are many more opportunities for the Grey smell to get in the cabin, especially in the area you are talking about.
A bad cheater valve will not likely slow drains.
mx08453

I agree that "grey smells nearly as bad as black"... and that a bad air admittance valve: (aka: cheater valve):

which are often the source of a "tank odor", WILL NOT likely slow drains"...(unless it "fails" in the closed position).

If/when an air admittance valve fails to close, (does not seal properly), it WILL allow tank odor into the coach.

One key to locating and stopping "tank odors" in a RV is understanding HOW air admittance valves work, (if your RV has them..NOT ALL RVs do!), and WHY they are used.
See: Air Admittance Valves explained

Mel
'96 Safari
mel s is offline   Reply With Quote
Reply

Tags
odor, tank, water


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
Any suggestions to kill bad odor from black tank when toilet is used while underway? donnariley53 Plumbing | Systems and Fixtures 31 11-02-2016 09:05 PM
Black tank odor 46490 Plumbing | Systems and Fixtures 11 06-13-2016 03:19 PM
Black tank odor mopargo Plumbing | Systems and Fixtures 8 06-27-2005 08:21 AM
black tank odor SeaRay Plumbing | Systems and Fixtures 12 01-10-2005 01:14 PM

» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Winnebago Industries or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 03:05 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
×