Originally Posted by zachattack
Did you check/replace all the o-rings on the kegs? Take off the posts, pull the dip tubes, etc? Sounds like the liquid side dip tube o-ring is bad on that keg.
This. And check poppets. You can replace pretty cheaply if you can find out what style of keg you have. There are some universal poppets I think.
I have a problem where a certain keg of mine tends to pour at about half the rate as the other. It isn't a nice round pour, it's kind of like a trickle. If I slow it down a bit it will fill out and pour with a nice round pour, but still slower. I may be checking out one of those universal poppets myself.
If yours were just foaming I might say it could be anything in the line causing nucleation, but in this case I'd say check the poppets and O-rings. A lot of bubbles might indicate it's drawing in air when you pour somehow.