Air in beer out lines

I’ve got 3 kegs in my kegerator, 2 of them flow fine, the 3rd which I kegged last week, has air in the beer out line. Right now i have them all with picnic taps. The tube is clear tube and it’s very foamy when it flows and even after I stop the pour I can see there is not 100% beer in the line and that there is a ton of air. I know many people will say its all unbalanced, but my other two kegs run fine all at the same temp, same pressure, 10 psi. I even changed one of the working lines to see if it was the beer out line, but same issue.

Any thoughts at all of what else I can test?

Just a few things to check
Bad O ring seals on the posts of the keg
Debris in your liquid out poppet
Bad liquid out fitting

[quote=“MRCCEO”]Just a few things to check
Bad O ring seals on the posts of the keg
Debris in your liquid out poppet
Bad liquid out fitting[/quote]

Bingo! I was missing o-rings between my dip tubes and my keg, both the gas and beer sides. I hadn’t used this keg in a while and the last time I did the o-rings were rotted out so I took them off. I got new ones and never put them on this keg. So with you suggestion, I took the keg apart to check orings and I was missing them. I put them on and the line filled right up.

So I think all is good!

Great suggestion!