grey tank stink
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โAug-11-2018 09:37 PM
I couldn't figure out where the smell was coming from. I thought maybe it was coming from the p-traps or perhaps even under the floor. But it was coming from the air conditioning vents.
How on earth can running water to the grey tanks cause it to vent to the A/C duct work?
I'm very, very puzzled.
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โAug-14-2018 09:59 AM
mobeewan wrote:
If you've done all that tank cleaning it sounds like the air conditioning has become stagnent. .
No, it's definitely grey tank smell being sucked, somehow, through the AC. If I add something like Pine-Sol to the grey tank, I can smell Pine-Sol though the AC system when we run, say, the shower or sink.
Good guess, though.
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โAug-14-2018 09:56 AM
down home wrote:
I had someone tell me he reversed the three fans to pull in and closed up all the windows etc and the pressure was enough to blow out the junk.
I wish I could have seen that.
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โAug-14-2018 09:55 AM
Lynnmor wrote:
Check under the shower for broken or leaking plumbing. Maybe the air in that area is drawn up thru the wall and into the ceiling where the A/C can distribute it.
Some version of this seems most likely.
Will continue looking.
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โAug-14-2018 01:53 AM
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โAug-14-2018 12:52 AM
Still should not be if there are water traps on the trains to prevent this.
They also sell lemon scented and other additives for the gray tank but they just sorta hide a problem.
We always flush our tanks whenever leaving, or most of the time,a site for next destination or if sitting for a while.
Wife does not allow grease into the gray tank which can cause all kind of wicked smells as it deteroriates and potential tank drain problems.
Even if she did we take two showers every day with liquid shower soaps with nice smells, and wash clothes every three days at least with detergent, that smells good and softeners. Final flush is gray after black tank and the sewer hose smells great as does the tank, not that I sniff them.
If you have loose birds nest etc blocking the vent tube exiting above the coach, which I don't see how could happen, I had someone tell me he reversed the three fans to pull in and closed up all the windows etc and the pressure was enough to blow out the junk. The only exits for the pressure would be though the shower drain and other drains and out the tank vents. You would have to open the valve in the toilet of course.
I'm not vouching for this, or attesting that it will work.Perhaps I shouldn't even mention it. Just another hare brained idea perhaps.
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โAug-13-2018 07:27 PM
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โAug-13-2018 06:54 PM
on Ford E350-460-7.5 Gas EFI
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2. 1991 Bighorn 9.5ft Truck Camper on 2003 Chev 2500HD 6.0 Gas
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โAug-13-2018 06:43 PM
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โAug-13-2018 06:07 PM
I removed the grey vent and the pipe has not dropped in to the tank.
I shot a high-pressure blast of water into the vent thinking if there was a crack or leak somewhere along the vent pipe I would see water running down the outside of the vent pipe, which is visible (inside a cabinet) at the point where it goes through the floor and in to the tank.
Further puzzling things: I was able to block the AC return duct on either side of the where the vent pipe enters the roof. The think being that I could isolate the section of the AC ducts that are close to the vent stack.
So I can't be sure at what point along the ductwork the smell is being drawn in and I really can tell from what point the tank is leaking. It has to be somewhere in the ceiling because the smell isn't present at any of the drains or admittance valves.
I'd replace the pipe at this point except that the location where the pipe meets the tank is right under a major wall.
Perhaps I can cut the pipe at the point where I can see it under the cabinet and then resection it from there. Or insert a smaller pipe inside the bigger one.
Like I said, it's a puzzler.
Also: the tank has been cleaned and cleaned and cleaned. Bleach, Fabuloso, Oxy-Clean, baking soda, etc etc. It's as clean as it's ever going to get.
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โAug-13-2018 08:51 AM
Now we scrape away as much food waste as possible before washing dishes. That has seemed to work. No more smell.
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โAug-12-2018 05:47 PM
'01 31' Rexall Vision, Generac 5.5k, 1000 watt Honda, PD 9245 conv, 300 watts Solar, 150 watt inv, 2 Cos 6v batts, ammeters, led voltmeters all over the place, KD/sat, 2 Oly Cat heaters w/ ox, and towing a 2012 Liberty, Lowe bass boat, or a Kawi Mule.
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โAug-12-2018 04:53 PM
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โAug-12-2018 04:40 AM
2006 40' Landmark Mt. Rushmore
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โAug-12-2018 12:48 AM
Lynnmor wrote:
The vent pipe that goes thru the roof may have dropped down into the tank. Check the top of the pipe on the roof to see if it is still up where it should be.
Will do.
Thanks!