We just installed a new toilet. With just liquid it flushed just fine. With solids it takes several flushed for all of the waste to empty from the bowl. The former toilet worked fine so the vent pipe is ok and since the toilet is new none of the hole on the rim should be blocked. Can anyone say if they had such a problem and how they solved it.

speedball1

I sure can and it involved not just one toilet but a whole slew of them. In my capacity as shop trouble shooter I began to run into a bunch 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. Pull the toilet again and try molding the wax seal so it doesn't choke down on the flush. Good luck, Tom