When your floor drain backs up at the same time your toilet won't flush and the washing machine is making the sink gurgle — that's not three separate problems. That's a main drain line blockage, and a plunger isn't going to fix it. This episode of Torque & Tape covers main line blockage diagnosis and clearing from clean-out access: locating the clean-out, opening it safely when there's standing water, choosing the right cable and cutting head, feeling the difference between a root intrusion and a grease buildup through the auger handle, a mentor mistake that pushed a root ball deeper and tripled the repair cost, and where the professional threshold is for main line work. Torque & Tape is available wherever you listen to podcasts.