My urinal is leaking at the bottom between the urinal and wall. it leaks when we flush it, and only when we flush. it is an american standard with a royal solan flusher assembly

Look on u tube .Or company wedsite of who makes your urinal .

these are called phantom flushes. the water is slowly leaking around flapper or the is a scratch of the flapper seat. I use fluidmaster parts

Toilets wear out from mineral deposits. Fixn may cost more then new. Googl used commodes first

The flush control panel normally comes off. You can then hopefully see inside. You won't be able to see much though as the cistern will be in the way...

Places to look for leaks are:
Soil pipe to pan
Cistern to flush pipe
Flush pipe to pan
Cistern overflow.

The float is stuck and the flapper leaks. Adjust the float so it won't touch anything, it needs to move up and down freely. Replace the flapper,

The spud washer is leaking and the urinal will need to be taken off of the wall and reinstalled with new seals.

Adjust the chain (or strap) to the flapper. It sounds like you need to give it a little slack.

You have replaced the flush valve completely? If so and the unit is still leaking, you may have a small crack in the tank or your just not getting the tank to bowl fittings tight enough. Also, they make two different thicknesses in the tank to bowl gasket. Make sure you are using the thicker of the two. You posted this under the American Std. thread, so if this is correct, give them a call. There could be a recall on this particular toilet due to a flaw.

I have the American Standard Champion 4 toilet. Water is leaking from the tank to the bowl causing the toilet to refill. I've replaced the flapper and cleaned the surface the flapper contact. Nothing seems to work.