Why won’t my bathroom sink drain but everything else in the house drains fine?

Cape style one bathroom first floor. Only the bathroom sinks doesn’t drain. We haven’t used it in a few weeks because we don’t have the money to hire a plumber. Unscrewed from the bottom of p trap and nothing but dark sandy gritty smelly **** came out. Any advice please



clean it out then put back is my advise

Try using a plunger to unclog it.If that doesn't work try putting a water hose in the drain, sealing up around the hose with a cloth, and then turning on the water hose, that will only work if you have good water pressure.

Hair clogged in the plunger area, before the trap, I have to do my wife's sink twice a year. I can either remove the whole assembly or use long tweezers and a small but long screwdriver.

If you have one of those chrome plunger type stoppers, you have to crawl under where the P trap is and disconnect the lever from the pipe.It is normally a screw on cap so itreleases the mechanism from pulling down the chrome plug at the top.
(I am saying this from memory so while the wording is not 100% you know what I am talking about.)
.Once you can lift up the cap, stick your finger down the drain and it will go down to the second joint of the finger and be stopped by a 'X' cross.
Now with your finger (which I hope is long and slender)drag the fingernail across one of the legs of the CROSS and then drag the imaginary gumbo up the side of the drain pipe into the sink.You will find much hair and soap and toothpaste jell.Do it twice if you must, JUST DO IT.
Then do the same thing to the other leg of the cross and drag out thestuff into the sink. If anything you can see down the drain an see the sometimes chrome cross.The stuff you dragged out put intoa wastepaper basket...as it is just hair,soap, toothpaste, spit, and that is about it. So it is safe.
. Now reassemble the stopper and when completed, then you can run the water. A large amount of HOT water, like let it run for 5 minutes on fast so that the water goes down the drain.
. That jell gumbo is in the pipes because you are not flushing the pipes either to wash the stuff into the sewer lines. So it just builds up in the pipe and the drain pipe gets smaller and smaller on TOP OF THE HAIR BLOCKAGE.Use more water...and the pipes never have this problem.The hair thing happens especially is you wash your hair in the sink.Even if you don't, some does fall in because the sink is usually under a mirror and most people have a brush right there to make pretty...and you lose the odd hairs.Mind you it will take a long time before this incident occurs again because


thoroughly clean out the p trap.then try again.

you may have to use a hand powered snake [hardware, under 20] on the resulting pipe into the wall [take the p trap completely off first] afterward

The pipe drain / vent Tee behind the sink is plugged up, I had this happen several times at one of my old houses where the damn tree rats (grey squirrels) were dropping walnuts down the vent pipe and clogged up the sink. I have also ran into this issue many other times. What really works is a short 10-12 inch long piece of 3/8 inch soft copper water line bent into a 90 degree angle and a basic coat hanger to fish in the wall Tee with the trap removed. Those stupid old cast iron Tee vents really suck to fish out. This is where the custom 3/8th inch copper 90 deal works when nothing else will make that 90 degree transition. After you bend the copper tube 90, insert the coat hanger and then loop the end of the coat hanger wire so it won't snag in the pipe and start fishing that bugger out. If you don't take my advice you will be looking at a 4 hour bill for a drain pro to come and do the same thing. Newer PVC drains usually have a street elbow in the wall behind the sink basin, older structures with cast iron pipes often used a damn pipe Tee so it's almost impossible to get a regular drain snake down that sharp 90 degree turn transition in a 2 inch ID basin drain pipe. The plunger won't work because it will keep sucking air back through the vent pipe. After removing the P trap, use a small spoon to dump some draino crystals down in the Tee before you try to fish it out. These are the worst clogs to remedy sometimes. Good luck with it.

I used Mr Muscle here in the UK. It cleared it on the second application.

Ok. I tried snake and drain cleaner in the past and gave up cause of money issues hiring someone. Looking for more. I do appreciate the help

Try a plumber's snake.There could be a blockage further down.