How to unstop a slow sink drain?

Question

I have a sink in my bathroom that is slow draining. I have used liquid plumber, removed the p trap, and used a snake. The slow drain doesn't drain any faster. I can insert the snake about 4 feet into the drain. Any ideas? Could a bad p trap install cause this problem? Nothing seems stopped up.

Answer 1

Usually in the bathroom sink and also tub/shower, hair falls off as you wash/bathe and even though you remove the P Trap, if you are still experiencing slow draining, then I would remove the pop-up and stick/swirl something long & thin with a piece of paper towel or an old rag wrapped to it down the pipe directly below to pickup all the nasty crud that has built up and accumulated inside the pipe...

Hope the Above Info Helps!

Answer 2

If the "One Second Plumber" (compressed gas bottle) doesnt work for you along with what you have done you may have to suffer with it. If the p trap is free flowing, this is your last option.

Good Luck

Answer 3

Are you sure its plugged?? You've done all the right proceedures.

Sometimes its just the ''pop-up'' ..

Its not lifting high enough

Plug the sink

put in some water

now set it to drain

now lift it a little higher with your fingers.

You can adjust it under the sink

Answer 4

IF you have access to the roof then go up there with a water hose. There will be a vent above the bathroom about 3" in diameter. Run the garden hose down it as far as it can go and have someone turn it on full blast. Run the water for about 5 minutes. This is your sewer vent and sometimes they get clogged and prevent water from draining . While you are up there do this to all the sewer vent lines. They will be located above bathrooms,kitchen and hot water heater. Good luck!

Answer 5

any number of things can be happening here:

1) you didn't run the snake far enough.

2) the sink's overflow is clogged and the drain/pop-up assembly is not "venting" correctly within the sink itself.

3) you have a flat drain line

try these things first.