Our Toto toilet is just over a year old. It uses a blue plastic GMAX valve to fill the tank. Occasionally we can hear a faint sound of water hissing in the tank. Nothing is going into the overflow tube, and tapping the side of the GMAX makes the hissing stop. Would appreciate any insites about what we’re hearing and how to correct it.
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Had the exact same phenomenon here. Turned out to be the ghost of my recently departed mother-in-law, the old snake herself.
Had to have the priest come in and sit on the john for a couple of hours, to exorcise her. He recommended psyllium hydrophilic mucilloid for fiber and regularity. Ostensibly reduces cholesterol too.
And now we know where the ghost of your mother-in-law has fled to.
Brought a knowing chuckle outta me...............Thx's
I have no idea how that fill valve works.
But first note the water level in the tank.
Then close the fill valve and then check the level again in 30-60 minutes. If the level is down water is leaking out, most often a bad flush valve. And the noise is when it refilling the tank.
If that is not the case is if the you can flush the seal on the fill valve or replace it.
.
A-holes. Hey every group has to have one. And I have been elected to be the one. I should make that my tagline.
Thanks for the good advice. Sure enough, the flush valve (flapper) was allowing the water to slowly escape after some (but not all) flushes. Cleaning the mating surfaces did not help. Lowes had a Korky brand replacement that appears identical, made with the same "Toto" brand name molded into the plastic as the original, leading me to believe that Korky supplies the part to Toto. Several days and flushes have passed with no problems. Maybe this is going to be an annual replacement item; seems like a fragile design, expecting a thin, rubbery flapper to seal a three inch opening. The year-old Toto was recommended by the architect who designed our room addition. Experiencing its distinctive flush action has been entertaining, but the thirty year old Kohler in the other bathroom has been a more reliable appliance.
I know they are closed today, but have you tried calling Toto's technical support department?
I have a few of their toilets and haven't had this problem, but it would be great if you could post the answer when you find out what the problem is.
had something similar and adjusted the float a little lower, shut's off earlier... if we're talking the same thing.
I had that problem to for a short time, the flapper was just a little misshaped. The weight of the water on top eventually pressed it into shape - I had TOTO ship me a spare just in case though.
I also had a problem with the handle sticking, the metal bar from the lever was binding against the side. Just bent it a little to fix that.
If I had someone installed this for me, my $700 TOTO Guinevier toilet would have required 2 callbacks by now. OUCH!
Rebuilding my home in Cypress, CA
Also a CRX fanatic!
I don't feel it's healthy to keep your faults bottled up inside me.
check your angel stop turn it on or off see if that works .check to see if washer is seating
I have the Gmax too...
1- lift the tank lid and look down inside, make sure the chain connecting the flapper and the flush lever has a lot of slack in the chain. If the chain is too tight, it prevents the flapper from closing completely...fix the chain by putting more slack in it. It should be limp when the toilet is full and in the "standby" wait mode.
2- If the chain is ok, then turn off the water supply (angle stop) and flush the toilet. While doing so, hold the flush lever down so that all the water will drain out completely. Once the tank is empty, reach down, lift the flapper valve and wipe the bottom surface of the flapper to make sure it's clean. While your at it, wipe the flapper valve seat too and make sure that when the valve is shut, no water is seeping out.
Don't use those in the inside the tank mounted sanitizers either. They will react with the flapper valve material and degrade it with time. They may help clean the toilet and make the water blue but they're death to toilet valves. Also, while the tank is empty, clean any foreign (I love that word) matter from the bottom of the tank to prevent any future debris related problems .
Edited 9/21/2008 3:20 pm by woodway
Last one of these I looked at , just went to the internet and found instructions on exactly how to troubleshoot it. I guess these valves are prone to problems, but for the one I looked at a new part from the supply house fixed it in about 5 minutes.
Here is a thread on these valves with similar problems: http://www.terrylove.com/forums/archive/index.php/t-13654.html