Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
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 11-06-2011, 02:00 AM   #1
Senior Member
 
Dunner's Avatar
 
Join Date: Jun 2011
Location: Phx, Arid~zona
Posts: 11,106
Sewage smell going up hills

First trip since I got my MH and on the way home, when I went up Telegraph Pass east of Yuma and Mohawk Pass a little further, I had a strong sewage smell. Black tank showed 1/3 full, Grey 2/3 full. I know I could get a Cyclone vent, but what would cause it to smell only when going up a hill? I got down to 45 MPH on the 6% grade, but didn't lose much speed on the Mohawk hill. No smell when I got in stop and go city traffic. No smell on the way there, but the black tank was empty.
__________________

__________________
2004 32' National Sea Breeze 1311 Class A on a F-53 Chassis, CHF, TST TPMS, 5Star Tune.
If Dunner (RVM23) can't fix it, it ain't broke!
Cheap Handling Fix Poll. Click Here to vote?
Dunner 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 11-06-2011, 02:17 AM   #2
Community Moderator
 
RV Wizard's Avatar


 
Country Coach Owners Club
Appalachian Campers
Gulf Streamers Club
Join Date: Mar 2000
Location: Chattanooga, Tn.
Posts: 12,062
We have found that the motion of the coach can cause the water in "P" traps to flow out enough to cause the gases in the tanks to escape into the coach. The wife will get up and add water to all the drains and the odor goes away. For us it only happens once in awhile; under the right angle and turn radius.
__________________

__________________
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7
RV Wizard is offline   Reply With Quote
Old 11-06-2011, 02:21 AM   #3
Senior Member
 
Dunner's Avatar
 
Join Date: Jun 2011
Location: Phx, Arid~zona
Posts: 11,106
Funny you should mention that. I made sure the traps had water in them before I parted camp. The bad part is that the smell lasted about 10 miles, even with the driver side window open and the air on vent.
__________________
2004 32' National Sea Breeze 1311 Class A on a F-53 Chassis, CHF, TST TPMS, 5Star Tune.
If Dunner (RVM23) can't fix it, it ain't broke!
Cheap Handling Fix Poll. Click Here to vote?
Dunner is offline   Reply With Quote
Old 11-06-2011, 02:23 AM   #4
Senior Member
 
Dunner's Avatar
 
Join Date: Jun 2011
Location: Phx, Arid~zona
Posts: 11,106
If the water drained out of the traps on the 6% hill, wouldn't the smell still be there on level ground?
__________________
2004 32' National Sea Breeze 1311 Class A on a F-53 Chassis, CHF, TST TPMS, 5Star Tune.
If Dunner (RVM23) can't fix it, it ain't broke!
Cheap Handling Fix Poll. Click Here to vote?
Dunner is offline   Reply With Quote
Old 11-06-2011, 04:23 AM   #5
Senior Member
 
njs42's Avatar
 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Apr 2011
Location: Federal Way, Wa.
Posts: 2,901
One thought: if you have washer/dryer? It could be that P-trap---and it has an interior vent pipe.

Our w/d was the source of sewer odors until we found the drain hose was inserted too far into the drain pipe---past the p-trap.

A window open in front can cause rear odors to move forward because of changing air pressure.
__________________
I do all my own stunts
03 Dolphin LX 6355, Workhorse W22, 8.1 vortec, 04 CR-V, Blue Ox, Brake Pro----Norm, Barb and
Doc(He's a PhD)
njs42 is offline   Reply With Quote
Old 11-06-2011, 04:43 AM   #6
Senior Member
 
Dunner's Avatar
 
Join Date: Jun 2011
Location: Phx, Arid~zona
Posts: 11,106
No W/D. I RV solo, so don't have anyone to check where the smell is coming from. I've heard that RVs have lightly sprung vacuum breakers on the sinks. I guess I could try some silicone grease on them to see if it still does it. I can't remember if I put chemicals in the black tank.
__________________
2004 32' National Sea Breeze 1311 Class A on a F-53 Chassis, CHF, TST TPMS, 5Star Tune.
If Dunner (RVM23) can't fix it, it ain't broke!
Cheap Handling Fix Poll. Click Here to vote?
Dunner is offline   Reply With Quote
Old 11-06-2011, 04:53 AM   #7
Senior Member
 
njs42's Avatar
 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Apr 2011
Location: Federal Way, Wa.
Posts: 2,901
Dunner---The grey tank gives off a nasty sewer smell--the only sewer smell problem we have had is from the grey tan. Black tank/toilet---grey tank every thing else shower/sinks so more places for the smell to come from.

Could you have had a roof vent open? If so opening the front window can cause air to dive off the roof and into the coach.

And, of course the biggest question? What are we doing up so early in the morning???
__________________
I do all my own stunts
03 Dolphin LX 6355, Workhorse W22, 8.1 vortec, 04 CR-V, Blue Ox, Brake Pro----Norm, Barb and
Doc(He's a PhD)
njs42 is offline   Reply With Quote
Old 11-06-2011, 04:58 AM   #8
Senior Member
 
Dunner's Avatar
 
Join Date: Jun 2011
Location: Phx, Arid~zona
Posts: 11,106
Insomnia. Eyes are starting to slam shut, though.

I might have had my Fantastic vent slightly open. I'll try chemicals in both and if that doesn't work, in both before the trip home.

But, why only up a hill?
__________________
2004 32' National Sea Breeze 1311 Class A on a F-53 Chassis, CHF, TST TPMS, 5Star Tune.
If Dunner (RVM23) can't fix it, it ain't broke!
Cheap Handling Fix Poll. Click Here to vote?
Dunner is offline   Reply With Quote
Old 11-06-2011, 05:11 AM   #9
Senior Member
 
njs42's Avatar
 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Apr 2011
Location: Federal Way, Wa.
Posts: 2,901
I was trying to think of that myself. It would shift the source of odor, by 6% anyway, and it might change the airflow over the roof enough to allow the vent to open. Different angle for the wind over the roof????

If your fantastic was open a little---dollars to doughnuts that is the entry point. Make sure it is closed and problem solved I'll bet.

The chemicals in the tanks will not help much---but flush the tanks out really well anyway. Particularly the grey--it is really foul (all of them are).

Best I can do at this hour.

Now that is all I am going to think about when I get back in bed??????
__________________
I do all my own stunts
03 Dolphin LX 6355, Workhorse W22, 8.1 vortec, 04 CR-V, Blue Ox, Brake Pro----Norm, Barb and
Doc(He's a PhD)
njs42 is offline   Reply With Quote
Old 11-06-2011, 05:14 AM   #10
Senior Member
 
njs42's Avatar
 
National RV Owners Club
Workhorse Chassis Owner
Join Date: Apr 2011
Location: Federal Way, Wa.
Posts: 2,901
Also a different angle to the wind and slower speed could create a venturi effect and allow the vent to draw air in---where as other wise the air just blows back off the roof.????
__________________
I do all my own stunts
03 Dolphin LX 6355, Workhorse W22, 8.1 vortec, 04 CR-V, Blue Ox, Brake Pro----Norm, Barb and
Doc(He's a PhD)
njs42 is offline   Reply With Quote
Old 11-06-2011, 08:00 AM   #11
Senior Member
 
Join Date: Oct 2005
Posts: 1,060
We found that the shower trap would allow fumes in so we place a ziplock bag of water over drain when traveling and no smells.
__________________
bldrbob is offline   Reply With Quote
Old 11-06-2011, 08:29 AM   #12
Senior Member
 
Dunner's Avatar
 
Join Date: Jun 2011
Location: Phx, Arid~zona
Posts: 11,106
Pretty sure I turned the Fantastic off before I left for home, which would automatically close it. The two tank vents are 5 and 8' to the rear of the Fantastic. I'm not arguing, just trying to logically think this out. With any air flow over the top of the Fantastic it would create suction from the MH. If it was open, it could swirl around and come in.

The second hill is so little of a grade, it doesn't even have a % sign.

I can't drain the tanks before I come home, but I did before the trip. I have a spray system for the black and the water was coming out pretty clean. No smell at all on the hills on the way down.

njs42, glad to give you sweet dreams.

My Non-LX Breeze came with a tub/shower; sorry LX owners. I could close the drain next time.
__________________
2004 32' National Sea Breeze 1311 Class A on a F-53 Chassis, CHF, TST TPMS, 5Star Tune.
If Dunner (RVM23) can't fix it, it ain't broke!
Cheap Handling Fix Poll. Click Here to vote?
Dunner is offline   Reply With Quote
Old 11-06-2011, 09:06 AM   #13
Senior Member
 
Join Date: Oct 2005
Posts: 1,060
If you had enough water in the grey tank that when you went up hill the water moved to one end of the tank If the shower drain pipe is near that end water would move into the shower pan and smell. When you stopped level the water would drain back into the tank.Place a dry paper towel in shower and go up a hill. If the towel gets wet mystry solved. If it is still dry keep looking.
BOB
__________________
bldrbob is offline   Reply With Quote
Old 11-06-2011, 09:12 AM   #14
Senior Member
 
Dunner's Avatar
 
Join Date: Jun 2011
Location: Phx, Arid~zona
Posts: 11,106
If that is the case, I have a spare water pump plumbed from the grey to the black tank. If I ever fill the grey tank, I can pump some of the grey to the black if needed.
__________________

__________________
2004 32' National Sea Breeze 1311 Class A on a F-53 Chassis, CHF, TST TPMS, 5Star Tune.
If Dunner (RVM23) can't fix it, it ain't broke!
Cheap Handling Fix Poll. Click Here to vote?
Dunner is offline   Reply With Quote
Reply

Tags
smell



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
Sewage Smell mdbaggs MH-General Discussions & Problems 11 09-07-2011 12:00 PM
Smell when pulling long hills smaaj Tiffin Motorhomes Owners Forum 7 08-21-2011 09:03 PM
Sewage smell danes-on-tour Monaco Owner's Forum 37 06-03-2008 02:21 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:23 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.