I guess that's what you would refer to it as? The toilets in the house flush, but there seems to be very little suction. Pretty much the water just drains out when flushed. Someone mentioned to me that it could have something to do with the venting. Also that they had an "automatic venting" toilet installed. This person also admitted that they had no idea what they were talking about, so I've got the ignorant advising the ignorant.