The plug is in the sewer cleanout on the back of my house. Part of the problem is that it has not been removed in 25-30 years and presumably the iron threads have rusted.


Another part of the problem is access.


When my AC was installed, they put it on a pad right beside the cleanout. Because the house overhangs the cleanout, When I get my pipe wrench on the plug at an angle, there isn't room to turn it. The rooter service I called had a wrench that would flex but he couldn't get the cap to turn, even with hammering on the handle. The wrench was only about 14 inches so maybe just needed more leverage.

The only thing I can think of to do at this point start drilling until I remove enough material to get a blade in and cut it out. I am VERY much hoping one of you has a better idea. Thanks.

I'd try the biggest screw extractor (e.g., easy-out). I broke the temperature sender gauge in my pickup's engine block. It was brass; the block is aluminum. A wrench broke it, a screw-extractor reamed it out. I ended up using a drill bit the size of the inner threads then a tap to clean them out. I flushed the coolant system to get all the brass filings I had ground into it: it looked like flakes of gold in a gold pan. You may not have the same experience.

This video shows the general idea....

[www.youtube.com]

Adapt the tools that have and will fit into your space.