I'm a pretty experienced remodler who recently installed a new low-flow toilet in a different location in my bathroom. Unfortunately, it doesn't flush. I suspect I've plumbed it incorrectly and hope someone can advise me. The old toilet was connected within 12" of a 4" drain/vent pipe and worked fine. I installed the new toilet 37" to the left of it's old location, installing a new closet connection and 4" PVC drain pipe with 1/4" drop per foot. This installation required turning the existing sanitary collar on the drain/vent pipe about 30 degrees and connecting a 4" drain pipe (37" in length) that connects to the closet flange. The installation went perfect until I tried to flush the new toilet (American Standard 2-piece gravity type). When I flush the toilet, the water raises in the bowl several inches, then slowly drops to the normal water level. If I hold the flush valve wide open until the tank drains completely, the toilet bowl will evacuate maybe twice in 10 flushes. I've double checked the drain pipe, vent pipe and toilet for obstructions and have none. I don't think the toilet is defective as I removed it and tested it on my patio - it flushes perfectly sitting on 4x4 blocks. I'm ready to pull my hair out over this---can anyone offfer any advise. Thank you