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winesalot's avatar
winesalot
Explorer
Aug 22, 2020

Toilet Smells Horrific When Flushing

I posted a while back about a venting problem we had with our 5th wheel that is. Sing lived in while parked indoors. (https://www.rv.net/forum/index.cfm/fuseaction/thread/tid/30096797/gotomsg/30097053.cfm#30097053)

I capped all three tank vents, black and two grays, with dryer vent hose and ran them outside the building. This solved our smell inside the building but outside the trailer problem. However, lately we are experiencing a bad - and I mean REAL bad stink every time we flush on the inside of the trailer. I have been draining and flushing the black water tank twice a week but this doesn’t seem to help. I am hesitant to use strong chemical deodorizers because the trailer is dumping through a future toilet flange to our septic tank and drain field. What do I do? The wife is ready to move out, it’s that bad.
  • Just muy guess! You hooked up 4" dryer vent piping to the top of each vent stack. Did you remove the vent stack cover? Are you venting the dryer hose straight up, no bends or angles? If its a long run you may want to get some type of inline fan to help draw the oder out. When you empty the black tank are you rinsing the tank also? Maybe you are not allowing the black tank to fill enough before emptying. Depending on the size of the tank twice a week may be to often. I would keep flushing the tank until clean water comes out.
  • I put a product like Happy Camper in both the black and the gray tanks and that stops the inside odor. They are septic friendly.You may call me if you wish.

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