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Old 11-03-2013, 08:26 AM   #1
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lewishw's Avatar
1978 31' Sovereign
Colorado Springs , Colorado
Join Date: Jan 2012
Posts: 84
Slow leak on toilet flush pedal

I have found a very slow leak coming from the flush lever on my toilet. It is so slow that it's hard to even tell where it is coming from, but perhaps from the plastic end cap on the side. Is it possible that the cap is just a little bit loose, or mildly a bigger problem? The leak is so slow that on a full 24 hour period, if I put a cup under the leak and catch it all, it has less than 1 ounce of water in it. I am also certain it is fresh water, not black water that is leaking.

Should this be an easy fix or am I going to have to pull the throne off the floor to fix it?
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Old 11-03-2013, 09:29 AM   #2
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1974 Argosy 20
2014 20' Flying Cloud
Kooskia , Idaho
Join Date: Jul 2009
Posts: 4,591
If it is the original toilet, it is 35 years old now. Leaks happen. I would not be surprised if it is the anti syphon system, which on the old Thetford toilets causes what appears to be a leak, but in fact it is a bad interior valve part with water coming out the overflow vent.

It is very difficult to repair the thing in place. I would take it out first, and maybe when you see what fun that is, you will say, hells bells, lets just get a new one!
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Old 11-03-2013, 09:44 AM   #3
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1989 34.5' Airstream 345
Cleveland , Tennessee
Join Date: Jul 2007
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I had a leak in the same place in my '89 MH. My problem was caused by too much water pressure. I lost my pressure regulator while packing to go home on the previous trip. The pressure at the campground of next trip was too high for the plastic parts. Now I carry a spare that goes on the hose.
"Sometimes I wonder if the world is being run by smart people who are putting us on, or by imbeciles who really mean it." Mark Twain

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Old 11-04-2013, 06:57 AM   #4
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1978 31' Sovereign
Colorado Springs , Colorado
Join Date: Jan 2012
Posts: 84
It isn't the original toilet, and I'm guessing it's less than 10 years old, but I'm not sure. Where is the relief vent placed on the flush mechanism?
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