Sink won’t drain after cleaning p trap

Sink won’t drain after cleaning p trap. Nothing is worse than getting into a situation where the kitchen sink is clogged because you can not wash the dishes in the kitchen. It also becomes challenging to work in the kitchen due to the dirty smells and standing water in the kitchen sink.

If you do not prevent using the kitchen sink, then the water will start to come up, and it can make a pool on the kitchen floor, so immediately stop all the water lines connected to the kitchen sink drain.

You can try various methods to unclog the sink drain, like using a drain snake, chemical drain cleaner, hot boiling water, etc.

But, sometimes, you clean the p trap below the kitchen sink, and the water does not start to flow from the sink. It means the drain pipe is clogged past the trap. That’s why cleaning the p tarp does not affect the clogged.

To solve this problem, you need to check the drain pipe below the sink to get access to the pipe in the wall or underground. Keep reading this guide to learn how to unclog the kitchen sink.

Sink won’t drain after cleaning p trap

If your sink is not draining properly after cleaning the p trap, then it seems like there is an issue in the main sewage pipe, so use a drain snake to unclog the sink drain. Dont be shy to face this situation because it happens in every home where a clog is situated past the p-trap.

When you check the water rising in the kitchen sink instead of draining, start your work by checking the sink and then cleaning the p-trap. If water is still there, it means the clog is further in the plumbing system.

Without any further delay, read this guide to learn what to do if your sink won’t drain after properly clearing the p-trap.

Switch off the water supply

switch off the water supply

It’s very necessary to turn off the water supply when there is a clog in the main sewage line.

In modern plumbing systems, all the water pipes are linked with each other, so if you keep using the faucets in the home, water will start to rise from the kitchen sink or shower drain hole.

Clog in the p trap

The p tarp is located below the sink, and its the most important part because it is the most usual area where the clogs occur.

It is installed under the sink, and its main b is to detain water that usually clogs the drain pipe. The p tarp is usually clogged due to fruit and vegetable peels, hairs, grease and fats, and too much soap lather.

All these things are stuck in the p trap to clog it. So place the bucket under the p tarp and disconnect the p trap from the pipe.

All the puddles will go in the bucket. Clean the p trap with fresh water in some other home part and refix it with the sink pipe.

Check whether the water starts draining properly or is still the same situation; if there is no change in the water flow, the sink drain is clogged in the main sewerage line, and you need to find another solution to unclog the sink.

Use boiling water

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If there is a clog past the p trap, the first thing to attack is pouring hot boiling water into the sink drain opening.

When you do not take care of the kitchen sink while washing the dishes, then different things are stuck in the pipe, like hair, oil, grease, water sediments, dishwashing soap lather, food residue, etc.

So, boil the water for 20 minutes and pour it abe all plumbing pipes to loosen the clogged material.

Using boiling water for unclogging the drain pipe is the easiest option, so always pour hot boiling water to unclog a sink. If it does not make the clog fully clear, it will loosen the clogged material at least.

Follow these steps on how to use boiling water to unclog the kitchen sink drain.

  • Boil the water in a vessel for 30 minutes.
  • Pour the hot boiling water into the sink drain by removing the stopper.
  • It’s better to pour hot water from the bathroom sink because it will also clear if there is a clog there.
  • Check if the standing water starts to drain or if the water level is still rising in the sink.
  • If the water is still in the position where it is in the kitchen sink, then repeat the process to remove the clog altogether.

If plastic pipes are installed in your plumbing system, then do not use hot boiling water to unclog the drain because the hot water will damage the plastic pipes. Some PVC pipes have less quality and reliability; they are melted from hot water.

You can use fresh water instead of hot boiling water, but if the problem is not solved with the boiling of fresh water, then don’t frustrate because there are some other solutions also to clear the p trap pass clogged in the drain.

White vinegar

white vinegar

White vinegar is used not only for cooking food but also as a cleaning agent because it contains the acid that breaks up the debris, grease, sediments, and food residue blocking the pipe.

Distilled vinegar is used to decompose the clogged material, but it also removes the bad and pungent smell from the sink drain.

One cup of white vinegar is enough to clear the sink drain blockage. So, pour the vinegar into standing water to see the bubbles.

Leave it for 3o minutes to do its job because the acid present in the distilled vinegar will break the clogging material quickly.

Pour boiling water into the sink to clear the remaining clog. If you see the water flowing at normal speed, it means the drain line is clear, and you can wash the dishes in the kitchen sink.

Use baking soda

use baking soda

If the white vinegar does not clear the sink drain fully,  you can also use baking soda to unclog the drain pipes. Pour one cup of baking soda down the sink drain hole.

If the baking soda is not draining down from the hole easily, you can use a funnel to insert the baking soda down the sink pipe.

Wait at least ten minutes to settle the baking soda on debris and other clogged items.

Baking soda immediately breaks up the clogged material in the sink drain. It also clears the bad smell from the sink drain pipe.


The final thoughts on this article are that if you are facing trouble with your clogged sink drain after cleaning the p trap, use boiling water, baking soda, or white vinegar to clear the clog. I am hopeful this article has helped you to solve the problem.

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