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10-08-2020, 12:48 PM
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#1
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3 Rivet Member
2021 Interstate 24GL
Los Angeles
, California
Join Date: Sep 2020
Posts: 117
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Where is the black tank vent?
Every time I walk by the van I smell some sewage.
The black tank is almost empty. Only used it 3 times for #1....
Is there a sewage pipe vent on the car somewhere ?
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10-08-2020, 02:24 PM
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#2
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Rivet Master
2024 Interstate 19
Fulton
, Maryland
Join Date: May 2010
Posts: 3,883
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Quote:
Originally Posted by mike2016
Every time I walk by the van I smell some sewage.
The black tank is almost empty. Only used it 3 times for #1....
Is there a sewage pipe vent on the car somewhere ?
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In your photo there are two 360 Siphon vent caps on either side of the bath vent near the awning - like these. . .
https://www.lci1.com/360-siphon
The one forward is for the black tank. Looking closer at your photo there is solar wiring wrapped around the black tank vent. That might be interfering with the function of the vent.
But if you are smelling sewer outside the van it is more likely a small leak in the plumbing under the van.
__________________
- - Mike
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2024 Airstream Interstate 19e AWD
Previous: 2013 Airstream Interstate 3500 Ext Lounge
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10-08-2020, 02:27 PM
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#3
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3 Rivet Member
2013 Interstate Coach
Idaho Falls
, Idaho
Join Date: Jul 2017
Posts: 118
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On my 2013 Interstate Ext the black tank vent is the first black vent on the right side. The second black vent is to the grey water. The top of your coach looks like it has the same set up.
I had to repair both of my vents as the pipes did not extend far enough into the vent to create a seal. They had not sealed the roof around the pipe either. I had rain water leakage from the front vent.
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10-08-2020, 06:42 PM
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#4
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3 Rivet Member
2021 Interstate 24GL
Los Angeles
, California
Join Date: Sep 2020
Posts: 117
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Yea I thought those black things are just for wrapping the solar cables.
I’ll take a look.
It’s a brand new unit so leaking underneath shouldn’t be happening yet?
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10-08-2020, 08:48 PM
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#5
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Rivet Master
2024 Interstate 19
Fulton
, Maryland
Join Date: May 2010
Posts: 3,883
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Quote:
Originally Posted by Passin Thru
On my 2013 Interstate Ext . . .
I had to repair both of my vents as the pipes did not extend far enough into the vent to create a seal. They had not sealed the roof around the pipe either. I had rain water leakage from the front vent.
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I had to do the same thing on my 2013 AI. Airstream quality control has a long history of leaving errors on new units. So - it is possible for a new coach to have problems.
Mike2016 - since you have a new unit get the dealer to identify and fix the problem. There should be no noticeable odor if it is built right.
__________________
- - Mike
--------------------------
2024 Airstream Interstate 19e AWD
Previous: 2013 Airstream Interstate 3500 Ext Lounge
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10-08-2020, 10:26 PM
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#6
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3 Rivet Member
2021 Interstate 24GL
Los Angeles
, California
Join Date: Sep 2020
Posts: 117
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i looked around the underside of the coach and found the black tank, there's no smell around that area....
the smell is usually towards the back of the coach when i walk by it.
but it's not always there. is it possible that it's just the wind carrying the smell over from the vent?
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10-09-2020, 12:11 AM
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#7
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Rivet Master
2014 20' Flying Cloud
Sag Harbor
, New York
Join Date: Jun 2015
Posts: 17,523
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Quote:
Originally Posted by mike2016
. . .
. . . is it possible that it's just the wind carrying the smell over from the vent?
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Yes, especially if the ambient air temp is high, and the black tank has been "cooking" in the high heat. Does your coach sit in the sun, there in Walnut near Pasdena? That'll do it.
Even a small amount of the odoriferous gas can be noticeable to some folks who have a sensitive ability to smell things.
If possible . . . the nest time you notice it, get up on a ladder and put your nose as close as possible to the down-wind side of the vent(s).
You could add some black tank treatment chemicals and some water to control things, but the best solution is to dump ASAP.
PS -- Good advice to have the dealer "deal" with this. If the installation is defective, it should be corrected right away!
Good luck,
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10-09-2020, 11:56 AM
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#8
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3 Rivet Member
2021 Interstate 24GL
Los Angeles
, California
Join Date: Sep 2020
Posts: 117
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Yea it had been 100+ during the day for the past 2 weeks here... just started to cool down yesterday.
dont have the balls to get near that vent lol.
i'm trying to find a place to dump, but the closest one is an hour away.
i tried to look for a cleanout near my house, but there isn't one, besides the giant sewage manhole in the middle of the street.
where do you guys normally dump the black besides at RV parks?
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10-09-2020, 12:59 PM
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#9
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Contributing Member
2018 Interstate Grand Tour Ext
Austin (Hays County)
, Texas
Join Date: Jun 2002
Posts: 7,164
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The cleanout on my septic tank feed. I can't reach it with the macerator hose, so I use my blue wheeled tank and empty it into the opening.
__________________
John W. Irwin
2018 Interstate GT, "Sabre-Dog V"
WBCCI #9632
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10-09-2020, 02:21 PM
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#10
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Rivet Master
2017 20' Flying Cloud
Williamson County
, Texas
Join Date: Apr 2017
Posts: 817
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Once you verify everything is installed correctly, if you still have occasional odors try something like this. We had activated carbon filters on both our houses on septic and completely eliminated odors. https://www.septicsolutions.com/sept...or-2-pvc-vents
__________________
2018 GMC Canyon CCSB V6 Mallet Supercharger
2006 Chevrolet CCSB 2500HD 6.6T LBZ
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10-10-2020, 05:48 PM
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#11
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Rivet Master
Currently Looking...
2018 Interstate Grand Tour Ext
NORTH MYRTLE BEACH
, South Carolina
Join Date: Dec 2017
Posts: 892
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Wow...not sure you should smell sewage in that case. Are you sure it's not a propane leak?
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10-13-2020, 10:19 PM
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#12
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3 Rivet Member
2021 Interstate 24GL
Los Angeles
, California
Join Date: Sep 2020
Posts: 117
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Quote:
Originally Posted by Mansderm161
Wow...not sure you should smell sewage in that case. Are you sure it's not a propane leak?
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at first i thought it was propane, the switch was turned off, and i've been observing the propane tank level gauge, nothing changed for a week.
now it smells more and more like 100% raw sewage as the heat cooks it ... lol
the black tank was empty when we started using it for #1, and i didn't add any water to it, and no chemical. we used it on the very first trip out and wasn't really prepared. it was just a one day trip out to the beach, just to test things out... used it for 3x #1s
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10-14-2020, 03:59 AM
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#13
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Rivet Master
2014 20' Flying Cloud
Sag Harbor
, New York
Join Date: Jun 2015
Posts: 17,523
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10-15-2020, 12:36 AM
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#14
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3 Rivet Member
2021 Interstate 24GL
Los Angeles
, California
Join Date: Sep 2020
Posts: 117
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Did my first dump today! before i went to the dump site (RV park 10 mile away), i added another drop of "smell good" chemical, that looks like dishwasher detergent. filled up the black tank to 75% as used the rest of the fresh water for grey.
dumped it all, was easier than i thought and no mess.
no more smell
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10-15-2020, 01:10 AM
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#15
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Rivet Master
2014 20' Flying Cloud
Sag Harbor
, New York
Join Date: Jun 2015
Posts: 17,523
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Nothing like a good dump!
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10-15-2020, 07:52 AM
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#16
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Prof. of Pending Projects
2018 Tommy Bahama Interstate
Orlando
, Florida
Join Date: Sep 2017
Posts: 2,658
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Quote:
Originally Posted by OTRA15
Nothing like a good dump!
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