Submitted by thezoomies t3_ydeuc3 in DIY

A few weeks ago I used a kit to fix a flapper that wasn’t getting good contact. The kit had a flapper that sat a little higher, and a ring to put over the top of the flush valve so that the new flapper is guaranteed a perfectly smooth surface. That completely fixed the problem, until a couple days ago, and now it’s slowly leaking into the bowl until the tank gets low enough to engage the fill valve. It’s driving me insane, because it did not leak at all for several weeks. Why now?! Do I need to replace the whole flush valve?

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Smythzilla t1_itrudk5 wrote

Well you better go catch it!

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jaxpaboo t1_itrvh40 wrote

Might as well replace the whole flush value assembly. I think you may need to take the tank off as well, so make sure to replace those 2 long bolts and gaskets as well.

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Ok-Advantage9625 t1_itrwjd7 wrote

Are you using any toilet bowl bleach tabs in the tank? I’ve had those errode the rubber pretty quickly.

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JerryMandaring t1_itrxfmx wrote

I had the same thing happen when I finally replaced my flapper with that new kit.

I would bet that where you attached the new flapper kit, with the putty underneath it, you didn't "CLEAN WITH MINERAL SPIRITS AND DRY BEFORE ATTACHING" the new kit. I half-assed cleaned mine the first time and it began leaking again a few weeks later. Took it apart again and followed the directions this time, cleaning and drying it properly, and it's been quiet for 4 years now.

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vc1914 t1_itrxvgu wrote

Mine was doing really same thing. Replaced the flapper twice and it ended up being the full valve. Super easy repair and inexpensive. Haven’t had the issue since… has been about 3 months now.

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dracogiraffa t1_itsb5y9 wrote

Hard water and bleach could destroy the silicone or rubber in the flappers enough that it could trickle into the bowl. If the flapper is brand new take a closer look at the O rings too.

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thezoomies OP t1_itufm82 wrote

It didn’t come with putty, it came with some cement that you’re not supposed to touch, and a hard plastic ring that becomes the new seat for the flapper.

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JerryMandaring t1_ituykgk wrote

I usually use the Fluidmaster ones. The gray part is the included putty. I'm pretty certain your leak is here. You stated the leak stopped for a few weeks, so I would rule out the fill valve for now. There's a good reason why the putty works better.

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