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 > MOTORHOME FORUMS > Class A Motorhome Discussions
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 08-30-2017, 03:28 PM   #43
Senior Member
 
oakcreekeric's Avatar
 
Join Date: Mar 2014
Location: Oak Creek, WI
Posts: 1,144
Quote:
Originally Posted by marjoa View Post
We had a very similar issue as you until we did these 2 things:

#1
We've changed out both of our bath vents to the 360's. The OEM vents are notorious for not venting properly. They don't create enough upward draw. The 360's create a much better draft to "PULL" the gases out the stack whether underway or sitting still.

Here's a link that shows one of the new vents installed when I redid our roof:
http://www.irv2.com/forums/f258/fina...ne-316925.html
I'm going with the first part, I think it may be my vent covers.. I'll be honest.. my GF usually gives me grief about the time it takes me to dump my tanks (no, I don't make people wait in line behind me).. She always teases me about doing a "taste" test on my tanks before I officially say I'm done.. I'm pretty anal about cleaning those suckers out.. and besides.. I don't have the issue unless I'm driving and I haven't dumped...

I think changing out the vent stacks will be the way to go

Thanks
__________________
Eric & Denise
2012 Itasca Sunstar 35F W/ 5-Star Tuner
2017 Harley-Davidson Ultra Limited
oakcreekeric 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 08-30-2017, 03:30 PM   #44
Senior Member
 
oakcreekeric's Avatar
 
Join Date: Mar 2014
Location: Oak Creek, WI
Posts: 1,144
Quote:
Originally Posted by TCollins View Post
You asked about a wax ring on the toilet. As far as I know they don't come with a wax ring. Any rv toilet I am familiar with has a foam type ring that does the function of a wax ring. They are easy enough to check. A couple nuts need to be removed, water line disconnected and the toilet will lift off.

I was having odor issues from black tank and found the ring had been installed upside down and partially pushed down the hole. It was not making a good seal. I bought a new seal, installed it properly and the smell was gone. Perhaps yours has dislocated or deteriorated. Not fun but a cheap, easy repair.

TC
Thanks for the info.. It may be worth taking apart for the piece of mind knowing it was done correctly...

As I've said before..we only have this issue while driving and we don't have this issue on the back toilet, just the front one..
__________________
Eric & Denise
2012 Itasca Sunstar 35F W/ 5-Star Tuner
2017 Harley-Davidson Ultra Limited
oakcreekeric is offline   Reply With Quote
Old 08-30-2017, 03:32 PM   #45
Senior Member
 
oakcreekeric's Avatar
 
Join Date: Mar 2014
Location: Oak Creek, WI
Posts: 1,144
Quote:
Originally Posted by Agility57 View Post
^^^ This. I replaced mine after having the exact problem you describe and problem gone, windows open when driving or not. Get a better quality vent cap at your local hardware to replace the cheap one on your rig. I thin I paid $20.00 for mine.

I don't think its the vacuum breakers, as I don't have the smell unless I use the toilet in the middle bath.. However, I may be replacing them as a matter of general maintenance and upgrades..

Thanks
__________________
Eric & Denise
2012 Itasca Sunstar 35F W/ 5-Star Tuner
2017 Harley-Davidson Ultra Limited
oakcreekeric is offline   Reply With Quote
Old 08-30-2017, 06:23 PM   #46
Senior Member
 
Monaco Owners Club
Join Date: Feb 2011
Location: Jax Fl
Posts: 211
Go with the "Turtle" roof vents. Have used them on all the RVs we've owned. We do add chemicals to our gray water tank. It the only tank we have an occasional problem with.
__________________
Jake & Sarah, US Army Retired,
2020 Entegra Reatta 39T2, 360 Cummins, Allision 3000, 2016 F150 4x4, Air Force 1
J2Jake is offline   Reply With Quote
Old 08-30-2017, 08:04 PM   #47
Senior Member
 
Join Date: Sep 2015
Posts: 474
While you are changing your vent caps take a look at the vent pipe itself. Sometimes for whatever reason they may terminate slightly below the roof line and fumes can be sucked back in that way. Both of my vent pipes were below the roof line. I made a couple short extensions to bring them slightly above the roof.

TC
__________________
TomC
Northwest Ohio
2004 Holiday Rambler Admiral 30pdd.
TCollins is offline   Reply With Quote
Old 08-30-2017, 11:18 PM   #48
Senior Member
 
Fleetwood Owners Club
Join Date: Feb 2017
Location: Texas
Posts: 836
tank vent

https://www.rvpartsnation.com/rv-plu...ng-tank-vents/
Jyrocharlie is offline   Reply With Quote
Old 08-31-2017, 12:00 AM   #49
Senior Member
 
billdreamlv's Avatar
 
Tiffin Owners Club
Join Date: Jul 2014
Posts: 487
OK, I'm not a plumber but I do know some things about physics, and I did sleep at a Holiday Inn once.

I have had the same thing happen to me. It only happens when I drive down the road. Not when stationary.

Well here is what I think your problem is.

When you drive, the black water in the tank moves around the tank and creates pressure pockets of air that need to try to escape the tank. It is like shaking a plastic gas container full of fuel. Regardless of the size of the vent pipe, these pockets of pressure try to escape some how. That gas under pressure, will exit the vent pipe and increase the pounds per square inch in the vent pipe, sink pipe, studor valve, the wax ring, toilet seal, and anything else connected to the tank. Then, the on the next corner the black water moves again in the tank and sucks air from the vent pipe and lowers the pounds per square inch. This back and forth movement of black water causes gases to escape at the least secure plumbing fitting. YOUR STUDOR VALVE is probably the least secure and some valves will belch gas under pressure.

The solution is to get the most expensive Studor valve and use teflon tape to secure it. Secondly, it might behoove you to cap off the vent and induce a fog or colored smoke in pipe under pressure so you can see where the weak points are. I just replaced my wax ring (it is actually some kind of plastic and fabric) on my toilet and that helped a lot.

Bottom line is that when you are driving with a boat load of ___t, your going to get some gas under pressure. Empty your tanks before you leave. No metaphor here.
__________________
Bill & Mary USN 69-73 ASW Technician, MBA.
2006 Tiffin Allegro Bus QDP 1060 watts solar
2012 Jeep Grand Cherokee '16 Polaris Razor 4
billdreamlv is offline   Reply With Quote
Old 08-31-2017, 08:33 AM   #50
Senior Member
 
Russ Silber's Avatar
 
Ford Super Duty Owner
Join Date: Jun 2008
Location: Melbourne Fl
Posts: 2,705
I installed directional vent syphones on roof stacks solved problems.
Russ Silber is offline   Reply With Quote
Reply

Tags
itasca, 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
Leaning Itasca Sunstar 35F mikez6941 Winnebago Industries Owner's Forum 15 06-30-2014 04:11 PM
2014 Itasca Sunstar 35F jmraz73 Winnebago Industries Owner's Forum 27 01-06-2014 01:40 PM
Used 2011 Itasca Sunstart 35F or Winnebago Vista 35F Solask Winnebago Industries Owner's Forum 13 04-18-2013 05:34 PM
slide out lock on Itasca 2012 sunstar 35F steve258 RV Systems & Appliances 3 07-23-2012 09:20 AM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 01:17 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.