If your vent pipe goes straight up from the drain drill a hole in the wall
above the P trap with a hole saw and cut into the pipe and use a hole saw
and go in that way . Use a automobile freeze plug to plug the vent hole If
you have a two story make sure it don't run down this vent pipe or the plug
will hang stuff up The thing about drain chemicals if the don't work then
you have a sink full of acid to compound the problem. They are the answer to
a slow drain not the best for a clogged one .
Speaking from 20 yrs experience as public housing service mgr 525 apts
A even better alternative is to cut the wall open and install a yee with a
cleanout but that requires drywall skills as well
wrote in message
ups.com...
Hello Folks ..

I have back-to-back bathroom sinks (sharing a common wall) which had a
slow drain clog. To fix it, I removed the stopper valve and then used
a plunger. In the process, I seem to have made the clog really
stubborn, now the water does not move at all. This is what I have
tried since ..
- removed both p-traps and cleaned them. This did not help, so the
clog is further down the line.
- Tried to use a snake from opening (since p-trap is removed), but
have not been able to make the snake go down .. instead it finds its
way in the other bathroom sink p-trap.
- next, used baking soda + vinegar trick .. but it has not helped
- filled up both sinks with hot water, left it overnight, hoping the
weight would eventually clear the clog, but no luck.
- even went to the roof (single story house). There is one vent --
fairly wide. Each bathroom has toilet, shower and sink, which are all
connected to the vent (I am assuming .. as there is no other vent
around). The snake is probably short (15') and did not reach the
clog.

I had called a plumber .. he took a look and said he needs to cut open
the pipe going into the wall so he can easily reach the vent. I have
doubts about whether he knew what he was doing .. so I sent him back
(he was going to charge $120).
None of the other drains in the house are clogging .. all flow freely
with a nice swirl. I don't want to use harsh chemicals .. drain pipes
are original .. about 45 years old.

There has to be an easier way to fix this .. any ideas ?