keurig not forcing water through when cup is insterted

"If the needle is open then there may be blockage in the internal piping or pump unit. Blockage could be calcium scale buildup or even algae.

I removed the bottom metal plate and unscrewed the inlet port. I then blew into the inlet port and held my finger over the over flow into the water reservoir. In a short the blockage let go and flooded the counter top! But now it works as it should! Good flow.... remember to do this with the Keurig unplugged"

"When the machine is working properly, there is a burst of air that empties the remainder of fluid in the k-cup. This stopped happening after a recent descaling. The result is a partially-empty K-cup that leaks the remaining coffee or tea after you open the machine in order to remove the used K-cup. I leave my coffee cup underneath to capture the additional coffee, but the machine is clearly missing a step before completing the cycle.

I’ve decaled the machine twice and also cleaned all needles (entry and exit), but I know the problem is with the missing air flow step or whatever that rush of steam is."