I bought a house that has some older fixtures and all of the toliets (3) are the American Standard 13.2 / 3.5 GPF models. The one toilet in the main washroom flushes odd, in that when it flushes often a large air bubble will come from the drain and then the toilet flushes, but it does not clean well and with granular waste will require 2 flushes... always. The other toilets seem OK. I will replace eventually with more efficient model after other renovations are done. Any thoughts on the problem?

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

I replaced the 2nd floor toilet in my house several years ago. It has all the features you require, except the 17" tank width. If you can fit a 20" tank ( actually 19 3/4") then the brand to buy is Toto. The quality is unsurpassed.

The (included) *seat* height is 16 1/8". GPF is 1.6, but the flush is amazingly powerful. I opted for the special self cleaning coating they call "Sana Gloss". Nothing sticks to it, it doesn't stain, and I've never had to use a toilet brush nor bowl cleaner on it the whole time I've owned it.

I bought mine from an online distributor. Just Google "Toto". I haven't checked recently, but they may have a narrow tank model. Mine has the extended bowl.

American standard cadet III is a nice flushing toilet that is reasonably priced. The tank is smaller than the cimarron. Toto also makes good flushing toilets that would fit your needs, but you will pay more for it too.

Actually sounds like trash in the toliet water valve.....or possible that if teflon tape was used to seal threads has been drapped accross inlet threads and caused blockage......Best way to check this is to take supply line loose from toliet and slowly turn water on while pointing the supply into a bucket or something to catch the water and see if the pressure is ok......Then check valve to see if grit or blockage is in the toliet valve.........Depends on valve design to whether or not you will be able to clean....may have to replace toliet valve with new one......hope this helps

First make sure that tank is filling up to water line inside of tank. Depending on what type of flush valve and water level cotrol you have there are several ways to adjust water level. If you can adjust level to just below overflow tube.
On some of the older models that were just trying to comply with govt. water use standards they had problems getting them to flush completley on one flush. Depending on what method the manufacturer choose to use you can modifiy them to use more water on each flush and make them work better.
On the older toliets they used 3.5-4 gallons of water per flush and now they are not allowed to use more than 1.6 G.P.F. so they had to find various means to accomplish this. I am on my third toilet since this law came into effect and the one we have now uses a 3 inch diameter flush valve instead of the 2 1/4 to 2 1/2 of older models. It does work better but of course I had to buy and install new toilet. i'm sorry if this is not much help but a lot of the first generation 1.6 flush toilets just don't work very well. Thanks

that is a Kohler model 4520<br /> the other numbers are for manufacturer codes.<br /> <br /> is this an older toilet? Kohler discontinued that model.<br /> <br /> <a href="http://www.designtool.kohler.com/us/detail.jsp?item=9654702">http://www.designtool.kohler.com/us/detail.jsp?item=9654702</a>

Place a strip of wood moulding behind the tank as a filler. Allow enough space to take the tank top off.

Troy, the flapper otherwise known as the flush valve is easily replaced. They are also very inexpensive. Sometimes they can become distorted due to the clorine in the water and won't operate in the same way they did when it was new. I bet this will fix your issue and save you money as well.

sounds like an old tiolet (3.5 gpf) my best answer is to replace with new fluidmaster! (lowes or homedepot) easy fix!