In ,
jamesgangnc typed:
On Dec 8, 10:46 am, Me wrote:
This toilet has been dry and out of use for several months
and is about two years old. After reconnecting it with a
new seal and the cold water line tight with no leaks, it
leaks like a gushing river whenever flushed.

It's fine sitting with a tank full of water - no leaks at
all. But the minute the toilet is flushed, what a mess of
water on the floor.

Which seal/gasket do I need to replace?

Did you scrape up all the old wax and put a new wax ring
down before placing the toilet on the floor?

I have had some luck reusing wax if it's not too old but
you still have to scrape it back into a ring so it can be
pressed down again. Since a wax ring is only a couple bucks
it's not worth it unless you've got no other reason to make
a supply run.

Also, warm the ring to a bit above room temperature so it's more flexble to
seat around the little nooks and crannies.
It almost sounds like there is NO wax ring there, or, the wax ring isn't
being compressed when the toilet is set on it. That wax ring being right is
the most important part of the process.

HTH,

Twayne`