Chosen Solution
My Keurig K40 is acting strange. The water output varies widely! I can press Large and get an espresso sized shot in the cup. I can press Small and get an overflowing mug! Press Medium and maybe get less than small. And all this is without a Pod installed.
With a pod installed, a lot of liquid will remain in the pod…and same results as above. I have cleaned all the needles, checked all tubing, valves and filters. Could the computer logic be faulty?
Have you descaled the machine lately? If you have hard water like I do, you would be surprised at the amount of gunk built up in there. Can you get a consistent water delivery? In other words if you press medium, do you get the same amount all the time? Have you tried the Keurig.com website? They have some good info. Also, a lot of good info on You Tube about the Keurig.
