Ah, I missed the reference to the sliding float as opposed to the one on the arm. I only do arm types.

Now would be a good time to try the old "put a few drops of food coloring in the tank" trick.

It's yo flappah! What the others said, just be sure you fix it soon. Especially if you have city water, it gets costly quick...ask me how I know.

This was my first thought also, check under the flapper and around the mateing surface for hard water deposits, it might only need a good cleaning with CLR

I say it's the gasket (seal) on the bottom (under the flapper) that seals the flush valve to the bottom of the tank.

Call a plumber.

My garage toilet does this also... my temp fix is just turn the water off at the valve at the wall when I am not using it.

I just picked up a "toilet rebuild kit" basically the toilet float & valve thingine for $6- $8 at home depot.

Will one of those fit your toilet?

I mean, what is your time worth and how much of it do you want to spend trouble shooting a toilet?

Jiggle the handle?

I used to think that toilets lasted centuries, but plumbers tell me the hard water plugs them up internally, so...

I have come to the conclusion the valve itself is bad even though I put a new seal in it. As soon as I turn the shut off valve off the noise stops instantly. Because this is a one piece toilet the tank is pretty small so I don't think a conventional ballcock with a float arm will fit. So tomorrow I'll purchase another Fluidmaster 400 and install.

Replace the braided line too.
A little silicone grease doesn't hurt anything but don't overtighten.

Also, match up the height of old and new (including float action) before reinstall.

Yep going to replace the supply line also and I generally always use some silicone grease on plumbing fixtures.

update problem solved
 

Today I went to my favorite orange box store and purchased a new toilet mechanism. Installed in all of 15 minutes and works like a champ. On to the next project ! :D

Hi,
Works like a champ, meaning no leak at all?
I usually replace the flapper every 1 ... or couple years. It usually works well for several days, then it would keep getting worse.
Don't know if there is one better than another.

Korky Flappers have always worked good for me.

Is there a "buy right, cry once" version of these? With three toilets in the house we practically have a cache of them ready for the inevitable failures.

I mean, there are far worse plumbing repairs to do, but the toilet is a critical quality of life concern ;) and random running/leaks/etc are just a waste of water.

I didn’t watch the video but I’ll argue with Toto being the Mercedes Benz of toilets. We’ve had Toto for 10 years now and haven’t had to do any maintenance. I’ve also had Mercedes Benz and every other week it needed something tinkered with.

OK. I gotta ask - how did you run into a 10 years dead thread on toilets?

http://forums.pelicanparts.com/uploa...1675612322.jpg
Something to make Al Bundy swoon.

Weird to be quoting someone who's passed in a 10 yo thread.

I once bought a fill valve (iirc was Korky) which was plastic and had ONE(1) singular thread holding it onto the tank and sandwiching two large washers. Yeah. No Returned that.

When you go to the store, ask for a 'toilet mechanism'.