Remove the cleanout plug with finesse and force photo 1.
Drain clean out cap stuck.
Once it s safely removed use the old fitting as a guide to cut a replacement section of pipe and clue up a new.
After this i used the cut off wheel to slice away portions of the cap until i could get near the inner.
I let the water drain out then i cut out the nut using a metal cut off wheel rotozip.
Https amzn to 354hhrh plumber s pipe wrench.
Slide both couplers onto the old pipe then slide the vertical.
Https amzn to 3lszden make your own sewer.
Open the cap and let the buildup drain out quickly open the cap and step out of the way.
Make sure your reciprocating saw has a metal cutting blade before you turn it on otherwise you re in for a difficult.
Heat the cleanout plug and fitting clean away any.