Keurig troubleshooting will produce small cup of coffee only

SOURCE: I cannot get a full cup of coffee from my Keurig

I HAD A SIMULAR PROBLEM...AFTER DESCALING WITH VINIGAR I NOTICED THAT MY COFFEE CUP WASNT ALWAYS SERVED FULL....THEN AFTER A LITTLE DIGGING ON THIS SITE IT BECAME OBVIOUS....I HAD A PIECE OF SOMETHING STUCK IN THE ONE WAY VALVE...SO TO SOLVE THIS I DISCONECTED MY KEURIG,BROUGHT IT OUT TO MY SHED AND CAREFULLY BLEW OUT THE THE ENTIRE UNIT WITH MY AIR COMPRESSOR BEING CAREFUL NOT TO USE TO MUCH PRESSURE AND BLOWING OUT A SEAL.....BROUGHT IT BACK IN,FIRED IT UP,WORKS PERFECT AGAIN...EVEN THE DESCALE LIGHT NOW STAYS OFF.NO MORE PINCHING THE RUBBER RETURN VALVE IN THE RESIVIOR JUST TO BREW A CUP OF COFFEE. HOPE THIS HELPS SOMEONE........................

SOURCE: keurig coffee maker does not make a full cup,

Check the needle to make sure it's not clogged. You can completely remove the k-cup holder and wash it out with your kitchen sink sprayer to help remove any obstructions. The manufacturer even recommends using the tip of a small paper clip to help push out any debris if needed. Then try brewing a cup of just water on the largest setting without a k-cup in it. Hope that helps! Best of luck...

Clayton McCune

• 214 Answers
• Posted on Apr 13, 2010

SOURCE: Missing Keurig part

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SOURCE: when i put the coffee cup in the keurig....nothing

use a small needle, paper clip or pipe cleaner and run it up into the "needle" section under the lid that pierces the top of the cup. The problem is one you will have often as coffee grounds get up in there and dry between uses and clogs the hole.

SOURCE: Coffee grounds in cup w/ Keurig 60

I have the answer because it is happening to me now. Moreso with the Timmothy's brand K cups. I did a little forensics on a good brew, and then on two slow with grounds in the final brewed coffee.
The inner filter is placed in the k cup and it is not glued to the top rim. The bag then just sits on the bottom of the k cup as it is passed with the hot pressurized water.
The good cups are glued to the top rim and there is no problem.
To investigate....remove the foil top carefully after the cup cools. Rinse out the grounds, and the filter bag should still be glued to the rim. if you've got a dribbler and one that passes the grounds into the cup...you will find the filter bag had fallen loose from the rim. Manufacturer defect...You bet!!!
I had 8 from a box of Timmothys 25 count pass grounds. Green mountain coffee may once in a while pass grounds, but very rare and maybe three times in the 4,000 k-cups we've used.