Troubleshooting: Why Is My Keurig Not Dispensing Full 12 Ounces of Water?

Many Keurig users have encountered the issue where their machine fails to dispense the full 12 ounces of water expected. In fact, a 1-cup measure on a Keurig machine actually holds 5.33 ounces, leading to the confusion of why your machine is only dispensing about 8 ounces when you select 12 ounces. This article aims to explore the possible causes and provide comprehensive troubleshooting steps to resolve this issue.

Understanding the Caffeine Measure on Keurig Machines

The standard measure for coffee is not always used in coffee makers; Keurig machines follow a specific ratio. A 1-cup measure in a Keurig machine translates to approximately 5.33 ounces. Therefore, a 12-cup reservoir in the Keurig Duo holds 64 ounces of liquid, contributing to the misunderstanding of the dispensed volume.

Potential Causes of Short Coffee Dispensation

Several causes can lead to limited water output from your Keurig machine, including clogged exit needles, clogged filters, limescale buildup, and air in the water lines. Below are specific troubleshooting steps to help you resolve the issue.

Clogged Exit Needle

The exit needle of your Keurig machine may be clogged with coffee grounds, tea, or cocoa mix. To resolve this, run a water-only cleaning cycle to clear any particles that may be stuck.

Steps:

Run a water-only cleaning cycle to flush out any stuck particles.

Clogged Filter and Water Line

Over time, minerals like calcium and magnesium can accumulate in your Keurig machine, leading to limescale buildup. This can affect the water flow and cause the filter and water line to clog. Here are steps to unclog these elements:

Steps:

Remove the water tank from the machine and unplug it from the wall. Remove the filter and soak it in vinegar or soapy water for about 45 minutes. If necessary, use a toothbrush or a Waterpik oral irrigator to flush out any remaining limescale. Thoroughly rinse the filter with fresh water, reassemble it, and reinstall it in its original location. Reconnect the machine to the wall and reinstall the water tank.

Presence of Air in the Water Lines

Trapped air in the water lines can also disrupt water flow. Here's how to release the air:

Steps:

Unplug the Keurig coffee maker from the wall outlet. Remove the drip tray and water tank. Gently shake the coffee maker to release the trapped air. Alternatively, shake the machine upside down or draw the water line closed with your finger while starting a brew cycle using only water.

Busted Keurig Water Pump

If none of the above solutions solve the issue, the water pump in your Keurig machine may be damaged. In this case, you may need to replace the motor or the entire device. It is recommended to follow the manufacturer's instructions or seek help from a qualified technician to ensure you select the correct part for your Keurig model.

Mechanical or electrical failure of the pump may require professional assistance.

Ending Note

If you have tried all these suggested fixes and your Keurig machine is still not dispensing the full amount of water, it may be best to contact Keurig customer service for further assistance. They can provide additional troubleshooting steps or inform you if your machine can be repaired or replaced, especially if it is still under warranty.

Further Reading:

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