Now, before you start googling "Keurig exorcisms" or considering a coffee maker replacement, try descaling your machine. It's like giving your Keurig a spa day, removing all the mineral buildup and getting it back to its former glory. Simply run a descaling solution through the machine, and you might just find your full cups returning.
Another possible reason for the incomplete cup is clogged needles. Yep, just like how your nose gets congested during allergy season, your Keurig's needles can get jammed up with old coffee oils and debris. Cleaning the needles with a paper clip or a specialized tool can be just what the doctor ordered to get your full cups flowing again.
And then there's the issue of coffee grounds, which can be like that one friend who always overstay their welcome. If the grounds are too finely ground or over-extracted, they can cause the water to flow more slowly, resulting in a less-than-full cup. So, make sure you're using the right type of coffee for your Keurig, and adjust the grind settings accordingly.
How to Fix Your Keurig That Isn’t Making a Full Cup - CoffeeHolli.com