Hi All, New to the boards but hope to return often. My problem is that every time we flush our upstairs toilet, our downstairs toilet gurgles. Here is some background details. Our house was built in the 60s; moderate sized split level home, and only has two bathrooms. I remodelled our upstairs bathroom when we first moved in in 2006, replacing the original toilet with a stronger flushing toto model. When we first moved in we also had drain problems, but resolved by snaking out the main drain line to the street, cutting roots, etc... However, we've had this problem with the downstairs toilet as long as I can remember, but not sure if it existed before I replaced the upstairs toilet. I've read that the problem could be blocked vent stack or blocked drains but both of those seem to be just fine, and I've used chemical products in the past to help ensure the drain was clean. I've confirmed that the vent stack is not blocked by spraying water down and seeing/hearing it drain without problems. I've also had a plumber out but asked them to leave when they started complaining about possibly having to pop the toilet up. I'm now at the point where I'm remodelling our downstairs bathroom, down to the studs, and thinking now is a good time to get this fixed once and for all while there's access to pipes. (I'm fearing that additinoal vent lines may need to be installed) I also wonder if now that I replace the downstairs toilet, if this problem may not even exist again, and thinking about installing the new toilet temporarily to see. I currently have the downstairs toilet and sink drains blocked off completely and there is no problem with flushing the upstairs toilet. Looking to see if anyone here has thoughts or ideas of the possible problem and what to do. Thanks in advance!

I have an older house('62) with 1.5" washing machine drain pipe which overflows. Excellent previous posts informed me that old 1.5" can't handle newer washer flow rates so need to change 1.5" to 2". I opened wall exposing pipe to vent pipe and reducer to 2" tie in(photos attached). I have a few questions before making the change: 1. Can I use the same basic configuration from before the old reducer with 2" PVC? 2. Is it ok to stick with the 1.5" vent pipe? Is it ok to run a short PVC piece up from new PVC T and connect to the old 1.5" vent pipe with a rubber reducer with clamps? (Sorry for what I assume is use of improper terminology). Thanks. [IMG]file:///C:/Documents%20and%20Settings/Administrator/Desktop/0130111049-00.jpg[/IMG] [IMG]file:///C:/Documents%20and%20Settings/Administrator/Desktop/0130111048-00.jpg[/IMG] [IMG]file:///C:/Documents%20and%20Settings/Administrator/Desktop/0130111048-01.jpg[/IMG]