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Plumbing Question, Old Tub Drain Totally Stopped Up

Glemon

Well-known member
Joined
Aug 29, 2020
Messages
2,137
Location
NE
I got a help I am stuck question. Tub won't drain.


This video shows the setup, tub is half full, no discernable water coming out. I thought the connection to the plunger broke, but it pulled it out and it all came out easy (unlike the video) and intact (looks just like unit in the video,)

Tub was draining a little slow a week ago, but nothing like this.

I put a snake down the overflow tube it goes about 3 to 3.5 feet in then hard stop, no amount of spinning seems to make any progress.

50s ranch, cast iron and copper drain pipe, probably as old as the house.

Seems weird it was draining a week ago and now hard stop on both draining and hard stop on the snake when I try to snake it.

But wait, there is more. My main sewer line clogged, I tried to snake it myself and thought I had improved it, but did not. When I was cleaning up I was dumping water in the toilet next to the clean out. Our sewer line is above basement floor, so basement toilet and sink go into a pit with a pump.

Turns out I hadn't cleared the main drain, pump turns on and blows water out the upstairs toilet. I am thinking this may have blown crud up the old drain pipes, clogging them, but still not clear why I can't snake it out.

Lastly, there is a clean out on the P trap for the tub, but it is old and very much rusted on. Have tried to take it out before, won't budge. Don't want to use to much force and disturb old pipes. Don't want to use heat, as it basically sticks six inches out of ceiling tile.
IMG_20260521_195415918.jpg

I should be able the fix (I think) but I am well and truly stumped on why it won't drain at all and why snake stops (I get a little hair and black gunk in it, nothing significant.

Want path of least resistance here, will only start taking old pipes with limited access apart as a last resort.

When I got my first drain snake years ago I thought I was on top of the clog world, king of drain sludge mountain, but I guess it ain't so.
 
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DGersic

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Joined
Mar 12, 2017
Messages
6,237
Location
DeKalb, IL
You could try one of those pressure bladders. It’ll either force something to move, or it’ll make a big mess. Be ready for either one.

Can you follow the drain from the outside? What is your snake hitting at 3’ from the tub? Is there a T there you’re not getting through with your snake?

Probably not worth messing with the P trap. Whatever your problem is, it’s after the P trap.
 
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Glemon

Well-known member
Joined
Aug 29, 2020
Messages
2,137
Location
NE
That is a very good question, you are right, at three feet or so plus should be past the trap.

IMG_20260521_222723107.jpg
It is behind very old ceiling tile, don't really want to tear it up, no way to repair, but I might have to. I think I can get to it from the other side towards the sewer if I cut exposed pipe and closer to the main clean out, which is only a few feet away (maybe 6-8' of pipe) from the p trap.

Looking at the ceiling, yeah, there is a T, as the pipe is heading in the direction of the red arrow, it must be routed around the vent fan.
IMG_20260521_223414452~2.jpg
Read that putting a slight bend in the end of your snake can help it get around corners, may try that next.
 
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