Hi, I want to replace an old American Standard toilet bowl that is a 4 bolt tie down design to the floor. Can I replace this with a standard 2 bolt floor mount design? If not are 4 bolt tie down models still available and if not what modification do I need to do to install a standard 2 bolt tie down design?

If you;re sure its under the toilet, look for a crack in the base, especially around the retianing bolts, or the wax bowl seal is gone, needs replacing.

They all work pretty much the same. Feel around the top rim of the bowl near where the tank meets the bowl you should find one bolt underneath on either side of the toilet seat. Tighten the nut under there to tighten the seat.

Shut the water off flush toilet and there should be two bolts that you can see at the under side of that tank. You need to remove them bolts and lift off the tank and install a new seal. Sometimes i mean sometimes you can tighten them a little and they will stop leaking. If it has been for awhile id just replace it.

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_a3369546f8067589

Is it leaking on the floor, or just into the bowl.
You can find replacement parts at any hardware or plumbing store.

The reason the tank doesn't sit down on the bowl is cause it's not supposed to just sit flush from the start. Your suppose to tighten the tank bolts down in order to get a water tight seal. There is also these little rubber " U " shaped things that sit on the porcelain lip on the back of the bowl thats what's there to protect it from cracking when you tighten the bolts down. Just place 1 on the right side and the the other on on the left side. and tighten down 'til the tank touches the bowl.

No there isn't. It is set by the design of the bowl and the depth of the p-trap inside the toilet

Seat the tank well on a new wax ring and then tightnen the two bolts on the sides evenly there is a small amount of pressure but thats it. To much and you'll snap the side of the bowl. You can caulk around the edge if you want more security,less movement.

The tension on the nuts is very tricky just a feel kinda thing.

Be carefull not to over do it.

The tank holding the proper amount of water is a good sign. The inside of the stool is like the GOOSE NECK under you sink. It always holds water. This may sound like a bit of a hassle to do but if all 3 toilets are identical, here is what you can try if you are a bit handy. Go to the hardware store and purchase 4 toilet wax rings with a plastic flange and a few sets of toilet floor flange bolts(they are cheap and you can always return if not used, as It is better to have xtra parts on hand). Turn off the water supply to the "Mystery Toilet". Leave the tank and everything connected to the stool. Flush the toilet and remove all excess water from the tank and bowl. This can be done with a shop vac, sponge or towel. Disconnect the water supply to the tank. Remove the bolts holding the stool to the floor and carefully remove toilet. Scrap off all the old wax from the floor flange and bottom of stool. Now go and repeat this proceedure to one of the toilets that is working properly. In other words Switch the "Mystery Toilet" with a "Working Toilet" and see how they react. If the working toilet does it in the same bathroom and the "Mystery Toilet" does not do it in the other bathroom then you probably have a VENTING PROBLEM. If the "Mysery Toilet" Does it in the other bathroom then you most likely have a Defective Toilet. This Job is best done by 2 people, as it can sometimes be challenging to center the new wax ring on the toilet flange. Reconnect to the floor and reconnect water supply to the tanks. DO NOT OVERTIGHTEN BOLTS to the floor flange as you may crack the toilet. All drain lines must be vented properly for water to flow. If you are curious check out drain venting on the internet. Also, sometimes a vent can become obstructed with debris, ice, bird nest, etc.. I would 1st check the vent on the roof visually and then have someone flush and listen. If you believe the vent is clear....Then do the toilet switch and go from there.....Hope this helps and Happy Holidays....Joe

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.