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1 of 4 kegs foamy- Mystery

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BaldApe

Well-Known Member
Joined
Aug 1, 2008
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Location
Calvert County, Maryland, USA
I have been kegging for years, and this one has me stumped.

I have 4 kegs on a CO2 manifold, so I know they are all at the same pressure. Three of them are running exactly as expected, nicely carbonated, moderate foam.

The 4th keg runs a tiny bit of clear beer (presumably what was in the line) then it is all foam. It tastes just fine, so I doubt it's an infection issue, besides, if infection caused excessive CO2 production, the CO2 should go to all the other kegs too.

I assumed that the beer-out tube had a pinhole leak in the headspace, driving CO2 into the line as the beer was dispensed, so I swapped the dip tube with one from another keg. No joy.

There are no gas or beer leaks to the outside.

Anybody have a clue what's going on here?
 
Did you check the o-ring that seals between the diptube and the keg threaded stud? CO2 from the headspace can leak past this seal and enter the beer stream causing foaming problems.
 

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