My Keurig® Only Brews a Small Amount【8 Solutions】

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It’s the morning you wake up early and still feel sleepy. Your body desperately needs a morning kick to start an energetic day. You start the brewing process of your morning joe slurp… and your K-cup is incomplete. Your Keurig is not making a full cup. This should not be happening, at least at the start of the day!

Keurig is an excellent device with a user-friendly interface and high-end technology. But if you are a coffee lover, you might encounter such a situation. So, what is the solution if your Keurig doesn’t brew a full cup of coffee?

Don’t worry! Luckily the problems are not too challenging to fix. Most of the time, these can be solved without professional help.

This article will describe the simple yet effective troubleshooting of your Keurig coffee maker half-a-cup problem. So, Stay with us!

8 Solutions to Fix Keurig Not Brewing Full Cup

As they say, ‘A problem well stated is half solved,’ First, try to find out why your Keurig did not brew a full cup. And then act accordingly. Following are the potential Keurig coffee maker problems with solutions. Let’s see which one works best for your Keurig machine.

Caution! Before performing the Keurig hacks below, please ensure that your device is powered off and plugged out.

1- Descale to Remove Internal Blocks

In the U.S., many houses get hard water that could be the big culprit of calcium buildup inside your Keurig coffee machines. If you are making coffee with tap water, there might be a chance that your device needs to be descaled.

According to the recommendation, it would be best to descale your Keurig machines twice or quarterly a year, even though you are using filtered water. Scaling might restrict the water flow. And your coffee maker starts pumping water slowly.

Keurig machines have a built-in descaling process. You can easily buy Keurig descaling solutions online or make your own descaling solution with white vinegar and water. Once you get the solution, read the manual and follow the instructions to clean your coffee maker.

2- Check The needle that punctures the k-Cups

Another potential problem people usually encounter with Keurig not making a full cup may be the clogged coffee grounds puncturing the K-cup pods.

It might happen if you are not habitual of throwing the coffee grounds right away. Follow the instructions to clean the area of your brewer.

  1. Remove the pod holder.
  2. Pull out the funnel from the holder.
  3. Locate the tube on the underside of the holder. Take a sharp pin or paper clip to clean the tube.
  4. In the meantime, rinse the holder with tap water thoroughly and be mindful of the exit needle located in the holder.
  5. Lift the machine handle and look inside the brewer’s head. You’ll see the two holes in the needle. They are the entrance needle of your brewers. Take a paper clip around the entrance needle to ensure no particles are left behind.
  6. Once done with the cleaning, attach the funnel to the holder and snap it back on the brewer’s head.
  7. Check out this video if you want to see a practical demonstration of what we discussed above.

To know if this was the issue, run a hot water cycle into an 8 oz measuring cup. Are you still getting half a cup? It is time to move on to the next possible solution.

Related Read: How To Unclog A Keurig Coffee Maker (Step-By-Step Guide)

3- Clear Buildup Around the Water Reservoir

Your Keurig water reservoir needs regular maintenance to optimize its performance. Sometimes scale and debris stick to the base and stop making more coffee.

The below instructions might be helpful for you.

  1. Remove and empty the water reservoir in the sink. If you also have a Keurig water filter, remove it and set it to a side.
  2. Locate the base port on the brewer below the reservoir. Take a damp cloth and clean it.
  3. Open hot water and carefully clean your mesh screen by shaking and running water. Remember to clean it from the bottom as well.
  4. Now place the water filter back in the reservoir. Put the reservoir back on the Keurig brewer.
  5. Fill the water tank with fresh water. Put an empty cup on the drip tray and start the water-only brew cycle.

4- Clean the bottom Filter

Sometimes debris is one of a few reasons that may stock in the exit filter and stop your Keurig not brewing enough coffee. Follow the below steps to learn how to unclog the Keurig bottom filter.

  1. To begin the process, you must disconnect the water reservoir from the bottom of your machine.
  2. Later, unscrew the bottom plate and remove two screws associated with the intake fitting.
  3. While looking inside, you will locate a black plastic filter.
  4. This part should be cleaned appropriately using needle nose pliers or paper clips.
  5. Reassemble all device parts in order as directed.

The process takes approximately 20 minutes, and you may begin to bring your same K cup of coffee again.

4- Greasing the Air Pump

When the air pump of your Keurig is functioning correctly, it pushes the hot water from the boiler through the K-cup and into your coffee cup. When the pump fails, Keurig is not pumping water properly. It might be time to lubricate the air pump.

This is a simple fix that anyone can do at home with just a little vegetable oil. However, if the air pump needs to be replaced, that is a more complex repair requiring some disassembly of your Keurig. If you want to be specific, watch this video.

Related Read: Easy Fixes For Keurig Still Says Descale After Descaling

5- Cleaning the Check Valve

Clog water reservoir valve is one of a few common problems with coffee makers being unable to brew too much coffee. Sometimes debris hinders the way of dispensing water.

To resolve this issue, check the water line and the check valve connecting the water tank to the brewer. You can do so by following the steps below:

  1. Open the head of your Keurig coffee brewer.
  2. You’ll see the water line with a check valve connected to the water pumping area.
  3. Pull out the check valve.
  4. Now clean it by soaking it in hot water and soap, blowing into or rinsing it, and it’ll work perfectly.
  5. Put it back and reassemble the head of the brewer.

6- Spanking or Tapping

You might be amazed! But if all the above solutions don’t work for you. This is a quick and easy fix to your Keurig brew the correct amount. Turn the device upside down and give two or three gentle taps on the bottom. Or tap three to four times on the head of your Keurig brewer.

This action helps dislodge trapped air bubbles or stocked coffee grounds inside the machine. Thus, often resulting in an effective solution for many owners. Try it for yourself!

8- Power Off your Machine

Are the technical fixes not working? There might be an electrical glitch. Just power off your machine, plug it out, and give it a good 10 to 20 mint rest or leave it for a few hours.

Remove and empty the water reservoir and put it back. Now power on your Keurig coffee machine. Open and close its head. Your device is now restored.

Contact Keurig Customer Service

If all the above solutions are not working, you can contact customer service for professional assistance by logging into the website You can also call on the helpline at Call 1-866-901-2739.

Final Thoughts

I hope this article might help you in brewing your whole cup of morning joe. Keeping your Keurig clean is essential for optimal performance.

Proper cleaning and regular descaling are needed to flush out any impurities that could create blockages, impede the flow rate, and prevent your cup from filling up. It will maximize your coffee output!

Avoid tap water as it will cause scale buildup in your brewer, thus causing inefficient performance. Filter water is best for your machine’s longevity and a tasty full K-cup.


How many times do you run water through Keurig after descaling?

After descaling your brewer, refill the reservoir with fresh water and rinse your machine thoroughly. Do it two times, at least if you use a Keurig descaling solution. However, rinse your device three to four times to avoid bad smells and awful taste if you use vinegar and water solution.

Why do Keurig cups make weak coffee?

When it comes to coffee or tea, personal preference can vary. Keurig and other compatible machines have a range of water settings to customize the amount of liquid used per brew. The default configuration includes the accepted American-style preference.

If you’re looking for a brew that meets your taste sensibilities. Then take a smaller cup. It will give you a small amount, but you will surely get your desired flavor.

How do you fix a Keurig that won’t brew?

There could be many reasons. The few common causes are scale buildup in your Keurig, coffee grounds clogged needles, air bubbles trapped, debris in the tank reservoir, check valve, or bottom filter. Go through the above article to get your Keurig not making a coffee problem resolved.

Why does my Keurig Keep Shutting Off and Won’t Brew?

Keurig machines may shut down due to several issues, such as faulty outlets, clogged brew needles, or disarranged magnets on the water reservoir. It could be a system glitch that needs to be restored.

How do you empty water from Keurig 2.0?

Unplug the device and remove the water reservoir’s cover. Pick up the reservoir and drain it out in the sink. Remove the drip tray. Lift the head of the device and remove the cartridges. Now move your finger underneath the ring and take it out steadily. After that, slide off the head cover. You’ll see the tubes going inside the machine.

The internal tank is connected to two tubes: one L-shaped, which lies horizontally, and another peek upward. Use needle-nose pliers to firmly grasp the zip ties securing the tubes, then wiggle them to loosen and detach. Flip the brewer so the water will run out of the L-shaped airflow opening.

Place a straw into the top of the tank. It will encourage airflow and help to displace the water. Your device is drained completely. Now reassemble the brewer as directed.

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