Please Print Paper Copy & Mail Use the shop vac to remove all the water from both sides of the sink then removed the clean out underneath and used super V power snake to go down the line it was at the transition between ABS and cast-iron that there was a plug I cannot be sure exactly what the plug was because they went further down the line once I pushed it in. We ran the camera down next identified some problem areas one of which is the transition and then at the bottom where it turns to head towards the septic tank the line is submerged because of a back grated pipe also non-directional fittings due to the pipes being 60 years old. Next we used a blow bag too to help clear up more debris out we used a blow bag down the clean out at both points the one under the kitchen sink and the other outside. We thoroughly tested the drain line by load testing both sides multiple of the sink after pumped large amounts of water into sink drain line. Sinks drain worked perfectly fine was able