Bob Clarke

08:07AM | 07/10/00
Member Since: 07/09/00
2 lifetime posts
Problem: can't stop flush valve leak.


Upon returning from vacation, I noticed the upstairs toliet was leaking (refill valve came on about every 5 minutes). I put some dye in the tank and saw it come out the bottom of the bowl. Also, after filling the tank and turning off the water suppy, I could almost watch the water level drop. So I replaced the flush valve (entire vale, not just the stopper) and the rubber washer that goes between the tank and the bowl.

But the leak continued. So I removed the tank, put the bolts back in, filled the tank with a hose and let it sit for 30 minutes. No leaking. I then placed the tank back onto the bowl, connected the bolts, but didn't connect the water supply line, and waited about 20 minutes. No leaking. Then I connecetd the water supply line, but left the water turned off, and the leaking began again. I thought that perhaps the tank was flexing just a bit when the line was hooked up, so I tried adjusting the tank bolts without cracking the tank, but the leak continues. I haven't found any cracks in the tank, but maybe there's a small one in there somewhere I can't see.

For now, it seems like I should just replace the tank.

Anyone have some ideas as to what the problem is?


07:54AM | 07/11/00
Member Since: 03/13/00
1675 lifetime posts
If I'm reading you correctly, there's really only one part left that could be the culprit. That's the shutoff valve - the thing that shuts off the the flow when the tank gets full. It's the assembly that the input water pipe or hose connects to. Replacing that should solve the problem.

Bob Clarke

01:28PM | 07/11/00
Member Since: 07/09/00
2 lifetime posts
I didn't think the refill valve was part of the problem because I don't even need to flush it upon connecting the vavle for the leaking into the bowl to start.

That is: I attach the tank to the bowl, but leave the water line disconnected from the refill valve, and wait about 20 minutes. No leak. I screw on the plastic cap that keeps the refill line and refill valve together. Leaking into the bowl starts almost immediately, without touching anything else.


07:24AM | 07/12/00
Member Since: 03/13/00
1675 lifetime posts
I still think that's it. You've got nothing to lose at this point. Good luck.
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