js5895 wrote:
Hi,

I have a 4" pipe going through my basement wall that I think is called
a sewer cleanout and I think it's not terminated properly.
The pipe is a 4" C.I. with 2 ears threaded for screws with a mushroom
vent cap on it. Does that sound right?


It's not a cleanout; it's a vent.

Odd, but some parts of the country (East coast)
required a low level vent to admit air into
the system so that air would continually circulate
up and out the roof terminal of the vent stack.

Jim