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07-29-2016, 07:18 PM
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#1
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Junior Member
Join Date: Jun 2016
Location: Utah
Posts: 18
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Big stink
[B]Hi all
Big time problem when dumping! When we flush the black water tank a big stink comes into the bathroom, it also gets into the rest of the trailer. Have to air it out for quit awhile before it goes away, then it comes back during the next dump. I use two types of flushing, the internal flush and an external flush from the connector.
[B]It does a great Job! I think the vent is having no problem as its only during flushing. This has been going on for about three weeks, Any idea's?
RC
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07-29-2016, 11:21 PM
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#2
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Senior Member
Join Date: Aug 2015
Location: Springfield, MO
Posts: 455
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Two things off the top of my head...
(1) If you have a bathroom fan, make sure it is turned off.
(2) Make sure there is water in the bowl to keep the gases out.
__________________
2014 Chevy CC Duramax 4X4 Long Bed
2017 Cedar Creek 36CKTS
MORryde independent suspension with disc brakes
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07-30-2016, 09:29 AM
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#3
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Senior Member
Join Date: Sep 2015
Posts: 212
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Hmmmm...... maybe you need to change your diet.....lol lol lol....but for real I agree with the above post too.....I thought maybe the wax ring was bad but I think if that was the case the toilet would be moving...
__________________
From Central Texas
2014 Cedar Creek Silverback 29IK
2010 Dodge Laramie 3500 Dually
My Steelpony....2007 HD Ultra Classic...done up in a memorial to the 343 firefighters who died 9/11
Never Ever Forget....yes I was a Volunteer FF for 20 years........
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07-30-2016, 10:04 AM
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#4
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Site Team
Join Date: Oct 2014
Posts: 15,290
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Do you have black tank drain open when using internal flushing?
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2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 100W solar panels
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07-30-2016, 10:16 AM
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#5
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Senior Member
Join Date: Jan 2013
Location: Space Coast of Florida
Posts: 4,020
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I had the same issue when flushing the tank. I just posted this post last week on how I eliminated my problem. Really bad odor when flushing the tank. When flushing the tank air is displaced by the water and goes out the stack vent. In my case the area around the vent was not sealed so the gas just went back down into the RV.
Read this post. May not be your problem but something to check...
http://www.forestriverforums.com/for...ed-114341.html
__________________
2016 Siverback 33IK, Towed 50K+ mile
2018 Ford F-350 Lariat 6.7L V8 Diesel 4WD Crew Cab
"If you don't know where you are going, any road will get you there."
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07-31-2016, 04:15 PM
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#6
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Old Member
Join Date: May 2015
Posts: 48
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You might try putting something under your sewer hose to create a "P" trap. This could be sewer gases coming from the park's sewer system, through your hose, tank and up through the roof vent.
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07-31-2016, 04:26 PM
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#7
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Mod free 5er
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,702
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Quote:
Originally Posted by dalford
I had the same issue when flushing the tank. I just posted this post last week on how I eliminated my problem. Really bad odor when flushing the tank. When flushing the tank air is displaced by the water and goes out the stack vent...
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Sorry to disagree, when water exits the black tank, air is DRAWN in thru the roof vent, not out. When you flush the stool, the water/debris goes into the tank and PUSHES air out the roof vent.
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07-31-2016, 06:26 PM
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#8
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Senior Member
Join Date: Jan 2013
Location: Space Coast of Florida
Posts: 4,020
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Quote:
Originally Posted by OldCoot
Sorry to disagree, when water exits the black tank, air is DRAWN in thru the roof vent, not out. When you flush the stool, the water/debris goes into the tank and PUSHES air out the roof vent.
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I know the stink I had and the stink I now don't have... Depends on what "flush the tank' means. Maybe I should have been more specific.. When I back flush my tank I usually drain the black tank with black valve open. I then close the black tank valve while still flushing, thus putting water in the closed tank. Smell has to go out the stack being displaced by water.
I also don't know which way air goes from a sewer when the sewer hose is not completely full,of water.
Anyway, fixed my problem which was mainly caused by no seal around stack pipe..
__________________
2016 Siverback 33IK, Towed 50K+ mile
2018 Ford F-350 Lariat 6.7L V8 Diesel 4WD Crew Cab
"If you don't know where you are going, any road will get you there."
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07-31-2016, 06:30 PM
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#9
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Mod free 5er
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,702
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Quote:
Originally Posted by dalford
I know the stink I had and the stink I now don't have... Depends on what "flush the tank' means. Maybe I should have been more specific.. When I back flush my tank I usually drain the black tank with black valve open. I then close the black tank valve while still flushing, thus putting water in the closed tank. Smell has to go out the stack being displaced by water.
I also don't know which way air goes from a sewer when the sewer hose is not completely full,of water.
Anyway, fixed my problem which was mainly caused by no seal around stack pipe..
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If you add water to the tank, air goes out of the roof vent, if you let water out of the tank, air comes in thru the roof vent.
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07-31-2016, 06:52 PM
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#10
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Senior Member
Join Date: Jan 2013
Location: Space Coast of Florida
Posts: 4,020
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Quote:
Originally Posted by OldCoot
If you add water to the tank, air goes out of the roof vent, if you let water out of the tank, air comes in thru the roof vent.
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That's what I said.. Glad we agree... 
__________________
2016 Siverback 33IK, Towed 50K+ mile
2018 Ford F-350 Lariat 6.7L V8 Diesel 4WD Crew Cab
"If you don't know where you are going, any road will get you there."
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07-31-2016, 06:56 PM
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#11
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Mod free 5er
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,702
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Quote:
Originally Posted by dalford
That's what I said.. Glad we agree... |
Just going by your post. "
Quote: Originally Posted by dalford View Post
I had the same issue when flushing the tank. I just posted this post last week on how I eliminated my problem. Really bad odor when flushing the tank. When flushing the tank air is displaced by the water and goes out the stack vent...
Sorry to disagree, when water exits the black tank, air is DRAWN in thru the roof vent, not out. When you flush the stool, the water/debris goes into the tank and PUSHES air out the roof vent."
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07-31-2016, 07:25 PM
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#12
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Senior Member
Join Date: Jan 2013
Location: Space Coast of Florida
Posts: 4,020
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I guess you feel argument today, so be it... I quests you can also ignore my post #8 where I clarified how I flush the tank ...
Please Depends on what "flush the tank' means. Maybe I should have been more specific.. When I back flush my tank I usually drain the black tank with black valve open. I then close the black tank valve while still flushing, thus putting water in the closed tank. Smell has to go out the stack being displaced by water."
So be it...
__________________
2016 Siverback 33IK, Towed 50K+ mile
2018 Ford F-350 Lariat 6.7L V8 Diesel 4WD Crew Cab
"If you don't know where you are going, any road will get you there."
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07-31-2016, 07:33 PM
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#13
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Moderator Emeritus
Join Date: Dec 2012
Location: North Carolina
Posts: 11,069
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Moving on, back to the OP's issue. Are you keeping water in your black tank at all times? As stated above, make sure the bathroom fan is off, water in toilet bowl and lid closed.
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2014 Crew Cab Chevy Silverado 3500 4wd Duramax/Allison
2014 Sabre 34REQS-6
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