I have a tiolet that is suppose to use less water. It plugs up so bad that you have to flush it at least twice every time. Is this just the way they work and do I need to just replace it? It has plugged up since it was first installed.

Let me guess... one of those "efficiency" toilets. I really hate those myself; they're junk. They use less water, which is critical to flushing properly. Check to see if you can raise the water level in the tank. Get it as high as you can.

XenoSapien

Yes it is an efficiency tiolet and the water level is as high as I can put it. Is there anything else I can do?

Not really. The only thing I can think of is change the fill tube to a taller size, and a fluidmaster that adjusts higher than the one you have. The tank does need to hold more water in order to flush properly.

Doing this change will defeat the purpose of being water efficient, but without a sufficient amount of water in the tank, it will always be a two-flush toilet. Which is actually requiring more water than your previous toilet to flush. I find these efficiency toilets to be a big scam.

If the holes line up and you still have it, you can put the old tank on the new bowl. This will work too. Other than that, going back to the standard toilet is probably all you can do. Maybe someone else who reads this has an answer that I haven't thought of though.

XenoSapien

Well, you can't legally buy a toilet that uses more than 1.6 gallons per flush.

That's plenty of water if the toilet is set up properly, but there are significant differences in the design of toilets, and therefore how well they flush... the cheap $79 two-piece boxed combo at Home Depot isn't such a great deal if it won't flush.

For your specific case, if the hints given already won't work for you, then I suggest you replace the toilet with something like the American Standard Champion:
American Standard - Champion Demo

In my capacity as shop trouble shooter I began to run into a slew of complaints on our new construction that were just like yours. I knew they all couldn't be " bad toilets" so I went looking for the cause. I found that when installing the new bowl that the wax ring had been forced out into the discharge pipe and blocking the free flow of water. When the water hit it a backpressure was set up preventing the siphon that makes a good flush and the solids just swirled around while the water went slowly down. I had to set up meeting with our plumbers and show them the problem and how to fix it. When you set the bowl, put the wax seal down on the flat side to the closet flange. Then take your hands and bevel the wax seal outward so that when you set a bowl on it the wax is forced out instead of in blocking the flush. The customer complaints stopped and I had less work to do. Try molding the wax seal so it doesn't choke down on the flush. Good luck, Tom

It looks like I am going to have to just buy a new tiolet after I checked out everything.
What is the best kind to buy that flushes with no problems?