RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Newmar Owner's Forum
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 09-18-2009, 06:56 AM   #1
Senior Member
 
Join Date: Jan 2008
Posts: 116
Black Tank filling from fresh water tank while traveling.

While driving water from the fresh water tank fills the black tank..has anyone experienced this problem before??

2005 DSDP 3815

Thanks, Keith
__________________

Keith727 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 09-18-2009, 07:18 AM   #2
Senior Member
 
Luv2go's Avatar
 
Newmar Owners Club
Nor'easters Club
Appalachian Campers
Ford Super Duty Owner
Coastal Campers
Join Date: Dec 2007
Posts: 2,261
Keith:

My first thought would be that your toilet was leaking, but it would take both the fresh water valve and the flush valve to do that. In our old coach, the bathroom sink was plumbed to the black tank, but that was a Gulfstream and I don't think Newmar does that (at least they didn't in our coach).

Do you have your water pump on while this is happening? If so you could turn it off and see if it still happens, that may give you some clues as to where the leak is.

Good luck!
Stewart
__________________

__________________
Stewart, Brenda and kids
2008 Newmar Canyon Star 3410, now at a new home
2006 Roadtrek Versatile 210
Luv2go is offline   Reply With Quote
Old 09-18-2009, 07:23 AM   #3
Senior Member
 
read & learn's Avatar
 
Newmar Owners Club
Join Date: Sep 2006
Location: Edgewater, NJ-Now touring the USA
Posts: 955
Are both of the holding tanks empty when this happens. If not are you sure the dump values are closed.
Is the water pump off.
It is hard to understand how water could get passed the closed toilet value.
__________________
2005 KSDP 3910-----2007 Jeep Liberty

THE MIND IS LIKE A PARACHUTE, IT MUST BE OPEN TO WORK
read & learn is offline   Reply With Quote
Old 09-18-2009, 07:59 AM   #4
Senior Member
 
Join Date: Jan 2008
Posts: 116
All valves are closed....Pump is off.. The Black tank was empty...Fresh water was only about 1/4 full...I don't see how it siphones from the fresh water tank, but I guess it does...This has happened two times....
Thanks,
Keith
Keith727 is offline   Reply With Quote
Old 09-18-2009, 08:34 AM   #5
Senior Member
 
DandS's Avatar
 
Newmar Owners Club
Ford Super Duty Owner
Join Date: Jun 2009
Location: West Michigan
Posts: 920
Hi Knot-flyin, welcome to the forum. There should only be one direct connection between the fresh tank and the black tank and that would be the toilet water supply. Would suspect a leak in that system somewhere if what you describe is happening. Can't imagine any other scenario where you would go from fresh to black - a connection like that could be an ugly mess. !!
__________________
Dave
2010 Canyon Star 3647
2010 Ford Escape
DandS is offline   Reply With Quote
Old 09-18-2009, 08:45 AM   #6
Senior Member
 
Luv2go's Avatar
 
Newmar Owners Club
Nor'easters Club
Appalachian Campers
Ford Super Duty Owner
Coastal Campers
Join Date: Dec 2007
Posts: 2,261
You don't happen to have the blackwater flush somehow hooked to the freshwater tank? It's a long shot, because they have vacuum breakers that would keep a siphon from occurring.

Another thought, it only happens while driving, that means agitation in the freshwater tank must be pushing the water into the black tank somehow, maybe that is how it gets past the vacuum breaker.

I agree with DandS, whatever it is does not sound good...
__________________
Stewart, Brenda and kids
2008 Newmar Canyon Star 3410, now at a new home
2006 Roadtrek Versatile 210
Luv2go is offline   Reply With Quote
Old 09-18-2009, 12:03 PM   #7
Community Moderator
 
"007"'s Avatar


 
Nor'easters Club
Workhorse Chassis Owner
iRV2 No Limits Club
Join Date: Oct 2004
Posts: 29,723
If you have two baths the smaller bath sink empties into the black tank for that toilet. If you over fill your fresh water tank the water will siphon out of fresh water tank while driving.
__________________
98KSCA, 99MACA, 03 KSCA-3740- 8.1 Chev-- ALLISON Trans
VISIT the NEWMAR QUICK TIPS & EASYMODS 1 & 2
QUICK TIPS # 3
RV SYSTEMS & APPLIANCES & RECALLS --- TECH INFORMATION
"007" is offline   Reply With Quote
Old 09-19-2009, 06:40 AM   #8
Senior Member
 
Join Date: Jan 2008
Posts: 116
The DSDP 3815 has only one bath..The black tank flush has no valve that I'am aware of. Just hook the hose up and turn water on. There is a valve you turn on to fill fresh water tank. The hook up for the fresh water is seperate hook up from the black tank flush hook up.

Thanks,
Keith
2005 DSDP 3815
Keith727 is offline   Reply With Quote
Old 09-22-2009, 03:40 PM   #9
Member
 
Join Date: Oct 2002
Location: Brownsville Tx. 78526
Posts: 92
Your vacuum breaker valve could be leaking. Sealand toilet, on back of toilet.
__________________
Ron
ronmc is offline   Reply With Quote
Old 09-23-2009, 05:10 AM   #10
Senior Member
 
69RoadRunner's Avatar
 
Join Date: Jun 2007
Location: Northern Virginny
Posts: 701
Are you actually getting water into an empty black tank, or are you reading the levels on the display?
__________________
09 Newmar Ventana 3942 (bunkbeds for the munchkins)
08 Ford Taurus X AWD Toad
69 Road Runner Convertible 528 Hemi 4 Speed
69RoadRunner is offline   Reply With Quote
Old 09-23-2009, 06:27 AM   #11
Senior Member
 
Workhorse Chassis Owner
Join Date: Jul 2005
Location: USA
Posts: 769
Any fluid remaining in tank moves around and "remakes" the high resistance connections for the tank level sensor. Think of your gas guage moving about the half mark as you manuever steeps and inclines. Good luck!!
__________________
TandW
TandW is offline   Reply With Quote
Old 09-27-2009, 07:05 PM   #12
Senior Member
 
Join Date: Jan 2008
Posts: 116
69RoadRunner::
The black tank was empty and fresh water tank about 1/4 full. I drained the black water tank which had about 25 gal. in it and the fresh water was almost empty.

Thanks.
Keith
2005 DSDP 3815
Keith727 is offline   Reply With Quote
Old 09-27-2009, 07:08 PM   #13
Senior Member
 
69RoadRunner's Avatar
 
Join Date: Jun 2007
Location: Northern Virginny
Posts: 701
I figured you had, I just wanted to be sure, because that's all I could come up with if the toilet isn't leaking.

Maybe you aren't completely draining the black tank because of a clog. Then when you drive around, that breaks the clog?
__________________

__________________
09 Newmar Ventana 3942 (bunkbeds for the munchkins)
08 Ford Taurus X AWD Toad
69 Road Runner Convertible 528 Hemi 4 Speed
69RoadRunner is offline   Reply With Quote
Reply



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
fresh water tank, when do you know it's full lp5151 Fleetwood Owner's Forum 8 09-04-2009 10:46 AM
TROUBLE W/USING FRESH WATER TANK OpaRon Newmar Owner's Forum 4 11-24-2008 04:20 PM
Odor Issue MakinSmoke Excel Owner's Forum 25 02-18-2008 01:33 PM
Fresh Water Tank Leak SteveG Winnebago Industries Owner's Forum 14 06-24-2007 09:34 AM
Journey 36G fresh water tank tomsm Winnebago Industries Owner's Forum 12 04-29-2005 11:53 AM

» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:33 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×