Ah, life with a Keurig. I love this machine, but it can be exasperating. Lately when I turn on my Keurig, it will start spontaneously pouring water out. Not every time but often. It also short changes me about every other time now. I wonder if I just brewed water through it more often it would flush out the debris and work better. I think most or all my trouble started after I began using the reusable filter. I think these clog up the machine more than K-Cups. And my ekobrew made a mess. (add to ekobrew post). There have been some great comments and helpful suggestions: pressurized water or air to clean out is main one.
Pressure in kcups, use different cups or puncture bottom to let out air
run water through peridically