It would help if I would tell the story right. I didn't mean the ballcock
but the flush valve. It all started with a hissing noise coming out of the
tank. I turned off the water to the tank and by the next morning the water
was down to the bottom of the tank. I went to a shop to get a replace flush
valve and the owner talked me into replacing the red gasket on the flush
valve first because that is what usually gets worn out first. Did that and
still a hissing noise and water drainage. Went back and got a complete
flush valve kit and replaced the whole thing. Filled up the tank, no
outside leak, no hissing sound. Turned the water off to make sure the water
wasn't leaking out from the inside and next morning, tank dry. Your turn.
Thanks

"Roger" wrote in message
. ..
"Jeff & Kathy Brown" wrote in message
. ..
What would cause the water in the toilet tank to drain out completely?
There isn't any outside leak. Would it be the gasket at the bottom of
the ballcock? I put in a new ballcock thinking that this was the problem
but the water is still draining out. Any suggestions would be
appreciated.

I'll try again. Right, this is an emty tank; not bowl!
Check the flapper - does it leak?
Does the ballcock turn on the water when you lower the ball? It should.
There may be a clog/plug in the pipe, or the inlet valve itself is
defective.
Roger