We have a leaky toilet at home. Leaks from the tank to the bowl. I replaced the flapper and I think it's tight. Looks to me that it's leaking from the base of inlet valve/overflow tube thingy that rises from the bottom of the tank. The gasket/o-ring where the tube meets the bottom of the tank doesn't look too good. Would that leak into the bowl in a one-piece toilet?

Thanks,
Sixto
93 300SD 3.0

Sounds like a job for CMAC...

__________________
"It's normal for these things to empty your wallet and break your heart in the process."
2012 SLK 350
1987 420 SEL

Good question - I have the exact same problem and will be watching this thread. Flapper is new(ish), valve was replaced, and still can't get the thing to stop leaking. I swear it's probably dumping a few gallons a day. I never thought of checking out that riser tube...

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08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280

One piece toilet? As in tank and bowl are a single unit?

__________________
2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car

http://www.thisoldhouse.com/toh/knowhow/plumbing/article/0,16417,219028,00.html

thanks How- I am now enlightened...

__________________
"It's normal for these things to empty your wallet and break your heart in the process."
2012 SLK 350
1987 420 SEL

That's what I would suspect. Water level too hi, flapper or the tube gasket.

Just finished replacing a toilet here. Yum, cleaning off the wax gasket... Fun. New toilet ends up about a half an inch deeper (front to back) than the old one which was already against the wall. I fudged a little forward and made it fit without having to move the floor flange. Whew.

The best thing to do IMO is to buy a rebuild kit and replace everything, they are less than $10.00 if you shop around.

Yes.

Sixto
93 300SD 3.0

two possibilities in my mind:
1. gasket you noted....the seal the flapper seats on. these sometimes are tough to get to seal properly too.

2. the standpipe will accept water if the float is adjusted too high and it fills til it runs over into the standpipe.

tom w

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

The valve closes when the water is about 1/2" from the top of the standpipe so I don't think it could be that. Possibly there's a crack along the standpipe.

Sixto
93 300SD 3.0

I have never seen one crack but that seems plausible to me.

Tom W

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

sixto- is it fixed yet?

__________________
"It's normal for these things to empty your wallet and break your heart in the process."
2012 SLK 350
1987 420 SEL

Ditto. I chased a slow leak for days replacing a little piece at a time. I'd have been better off price-wise and time-wise just replacing it all at once.

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1992 300D 2.5T
1980 Euro 300D (sadly, sold)
1998 Jetta TDI, 132K "Rudy"
1974 Triumph TR6
1999 Saab 9-5 wagon (wife's)

I'm glad someone's concerned

A new flapper slowed the leak but didn't get rid of it completely. I guess the inlet valve tube is next.

Sixto
93 300SD 3.0 - comatose