I have had my current keg in my kegerator for about two weeks. FYI- I changed the faucet to a Nukatap a couple of months ago and all was good. Other than the first second or two of the first pour of the day being foamy, everything was fine. I figured that was just the hotter beer in the tower. I have since added a tower cooling fan. The keg was pouring fine until a couple of days ago when the keg started pouring all foam. Its a 1/4 barrel of Miller Lite. I have about 10' - 15' of beer line in a coil that sits on top of the keg. A few days before the foam started pouring, when I open the faucet to pour, its like there were air pockets in the line that needed to be purged out. Once they were out beer was pouring slightly foamy at first but manageable. Now, its almost all foam. Temperature is normal and nothing else has changed in my system. I'm scratching my head trying to figure out what the problem might be. With the system going from pouring fine, to air pockets, to all foam in a matter of days with nothing changing in the kegerator, I'm having a hard time trouble shooting the problem. There is no liquid leaking anywhere and my CO2 tank is not empty, so don't think it could be a leak of some kind. I tried purging the pressure from the keg and regulator to see if it was over pressurized, but the beer still came out foamy, just slower. Any suggestions?