Leaking toilet - Flush valve or flapper?
I thought to myself - Ah must be the flapper, let me go get one and replace it. Easy peasy.
Last night, I installed the flapper and was washing up when the toilet did another ghost flush. I was like wtf!
I did the routine - Turn off water main to toilet, flush toilet to empty tank, reached in to remove/replace the flapper and did a quick wipe of the inside of the flapper seat (or flush valve) to make sure nothing icky is stuck on it.
I did all of the above prior to installing the new flapper, and did it all over again a second time with a bit more of a thorough wipe of the flapper seat and same thing happened with a ghost flush.
Ok, so trouble shooting time.
I took the lid off, flushed the toilet and let it fill up. Marked where it was, and walked off. Came back 30 minutes later and noticed the water dropped and the toilet just so happened to "ghost flush" when I walked in.
Frustrated, I flushed the toilet one last time - Let it fill up - Then turned off the water inlet. Marked the water line again, and left it over night. I figured it would probably "leak" to where ever the leak was and then stop leaking.
I was thinking - Alright, leave it overnight and I was expecting it to leak UP TO the flapper seat line. So this would confirm its something with the flapper (maybe I got a defective one?)
On the other hand, if the tank FULLY empties - Then it may be something else more serious.
For good measure, I also dropped in some color dye to help visually see where a leak may be. If the inside of the toilet bowl changes color, then its a leak at the bowl. If I see color dye on the floor then I know its the other parts.
I still came back once more before heading to bed and confirmed that the water inside the toilet bowl changed color and nothing on the outside of the bowl. So its definitely something with the flapper or the flush valve.
Good enough, I go to bed and woke up expecting to see either the water leaked and stopped at the edge of the flapper seat OR the tank would be empty.
Neither of these happened! The water actually stopped about half an inch ABOVE the flapper???
So now I'm a bit stumped?
Should I leave it for another day to see if any more water leaks out?
Not sure if its possible to lose lots of water at first then maybe slow to a super slow leak?
Obviously if its just a flapper issue, it would be a bit easier to deal with (buy another one). I really rather not change the flush valve as I havent done this before (it seems easy enough) - But my wife is pregnant and she is due any day now.
We have other washrooms we can use for now if baby comes in the next few minutes after this forum post so we are ok
But again, I really rather avoid having to re-do the flush valve if I dont need to.
Also the house was built in 2006, and I moved in 2012. I replaced the flappers roughly in 2013 - I honestly haven't heard of the flush valve failing before. The toilet is an American Standard, and the internal parts all appear to be Fluidmaster, minus the flapper which I replaced with Korky and am replacing again with Korky.
I was just hoping for some way I can confirm where the leak is, or if I may have missed anything?
Any insight much appreciated!