I have a six-sided plug on the kitchen sink P-trap that I need to remove….. I believe it is an old Crane pipe as the house was built in 1929 and almost everything plumbingwise in it is Crane….
My issue is that the vent pipe for this drain got filled up over the years with debris from trees, and has after a heavy rain made it down and is blocking the pipe from draining. I have no other access to the situation and getting to the vent pipe would mean breaking through either the exterior stucco walls or demolishing the plaster over wire lath inside and I cannot even ascertain exactly where the vent pipe is.
here is a photo. An advice as to removal of the plu would be greatly appreciated, as well as any recommendation of what to use if the plug cannot be reinstalled.