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07-01-2016, 10:04 AM
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#15
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Senior Member
Join Date: Jan 2009
Posts: 5,874
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Quote:
Originally Posted by VaDreamer
My radiator pipe solution is working like a champ, however now when I flush the toilet, I am getting smelly air backwash, as if the vent is stopped up.
Any ideas?
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It would be nice to see a piping schematic. Nothing serious but enough to see how the sink, black tank, and vent plumbing is laid out.
Since the smell is showing after the repair of the pipe connection, it now sounds like a slight pressure is building in your tank. Venting is crucial so as was stated above, a first step would be to examine the vent piping and make sure it is not obstructed.
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03 Itasca Sunova, Workhorse P32 with the 8.1 and 4L85-E
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07-02-2016, 09:02 PM
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#16
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Member
Join Date: Mar 2014
Location: Virginia
Posts: 30
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I took off the roof vent and there was a wasp nest in it, almost blocking it completely. Pulled that out and then took a 6' piece of 1/2" metal conduit, with rope attached, and dropped it into the vent pipe and it went all the way down to the el. It's much better now, but still a noticeable odor after flushing.
Plumbing diagram is attached.
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07-02-2016, 09:13 PM
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#17
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Senior Member
Join Date: Dec 2014
Posts: 1,668
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I did a quick search for a 1999 Santara, and the first one that I found had carpeting under the toilet. A small leak at the toilet base can cause odors, and the carpet hides the leak.
Mike
2000 HR Endeavor 40PBD
Freghtliner XC, CAT 3126B
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Mike
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07-02-2016, 10:49 PM
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#18
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Member
Join Date: Mar 2014
Location: Virginia
Posts: 30
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This one may have had carpet originally, but it has vinyl now. Thanks for the post though.
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07-03-2016, 12:06 AM
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#19
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Senior Member
Join Date: Jan 2009
Posts: 5,874
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Your drawing looks pretty straight forward and should work fine. If there's no obstruction in the vent, is it possible there is a low spot in the line between the sink and the tank? I'm thinking if so, then it could be acting like a P trap, holding water, thereby causing a slight pressure in the tank.
__________________
03 Itasca Sunova, Workhorse P32 with the 8.1 and 4L85-E
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07-03-2016, 12:36 AM
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#20
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Senior Member
Join Date: May 2014
Posts: 1,368
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Some of that nest my have fallen down and is still blocking it a little.
I would do the hot water treatment as suggested earlier.
Be sure to have someone watching the sink for you as you pour the water,
don't want to accidently over flow it If there is a blockage at the tank.
DTW
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Dan & Loretta, US Army Retired Aero Scout Pilot
2012 Fleetwood Providence 42P Class A/DP
Spartan Chassis, 8.9L Cummins 450HP
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07-03-2016, 01:07 PM
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#21
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Senior Member
Join Date: Mar 2007
Location: Apex, NC
Posts: 1,857
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I'd run a plumber's snake all the way to the tank.
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2010 Winnebago Journey Express 34Y
2010 Freightliner XCS (mfd 9/'09)
'07 Saturn Vue V6
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07-05-2016, 10:42 AM
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#22
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Member
Join Date: Mar 2014
Location: Virginia
Posts: 30
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Problem solved. I ran water down the sink since I had already resealed the roof vent (sink T is above where i was able to drop the conduit to) and maybe that flushed something out of the line. I'll post back if the issue returns.
I am thinking about buying a couple of solar powered roof vents to ensure there is always negative pressure in the tank. Any thoughts on these?
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07-06-2016, 08:43 AM
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#23
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Member
Join Date: Mar 2014
Location: Virginia
Posts: 30
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Spoke too soon. Problem still exists, but just not as noticeable. I'll either make some solar vents or buy them, and see it that gets rid of the problem.
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07-07-2016, 09:20 AM
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#24
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Senior Member
Tiffin Owners Club Freightliner Owners Club
Join Date: Aug 2014
Posts: 1,899
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Quote:
Originally Posted by VaDreamer
Spoke too soon. Problem still exists, but just not as noticeable. I'll either make some solar vents or buy them, and see it that gets rid of the problem.
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Your drawing above shows a trap in the sink drain.
It should contain enough water to block the smell.
Is it installed correctly?
Or do you have the duckbill kind of trap (might be called AAV).
I assume if you put one of those soft rubber sink stoppers over the sink drain, the smell goes away.
Dan
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2014 40QBH Phaeton DP Cummins 380HP ISL, Freightliner XC, 2019 Jeep Grand Cherokee Trailhawk TOAD
Blue Ox Aventa tow bar, SMI Air Force One -Cave Creek, AZ.
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07-07-2016, 05:41 PM
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#25
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Senior Member
Join Date: Jan 2009
Posts: 5,874
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Quote:
Originally Posted by dpinvidic
Your drawing above shows a trap in the sink drain.
It should contain enough water to block the smell.
Is it installed correctly?
Or do you have the duckbill kind of trap (might be called AAV).
I assume if you put one of those soft rubber sink stoppers over the sink drain, the smell goes away.
Dan
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I think VaDreamer stated that the smell came from the toilet when flushed. Still sounds like there is a slight pressure build up in the tank. The vent doesn't seem to be doing its job.
__________________
03 Itasca Sunova, Workhorse P32 with the 8.1 and 4L85-E
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07-23-2016, 07:49 PM
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#26
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Member
Join Date: Mar 2014
Location: Virginia
Posts: 30
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Everything is installed correctly, as far as I can tell. I think you are right, Mudfrog, vent not doing it's job. Hopefully solar vents will help.
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