2 kegs carbonated, one won't?

[devilishprune]

I have a keezer with one regulator connected to a 3 way manifold with 3 check valves. All of the valves are open, and two of the kegs connected to the manifold are deliciously carbonated and enjoyable. However, the other keg, that I put in there about 2 weeks before the other two, hasn't carbonated at this point.

I left the serving pressure on about 13.5 PSI for the entire time that they've been in there which has been about a month and a half for the non-carbonated keg.

I checked the disconnect, and when I press on the little black thing on the inside CO2 comes out, so do you have any other ideas why this might be going on? What could I try?

 

[Suthrncomfrt1884]

I'm thinking there's something wrong with your ball lock poppet. I think if it was a leak, you would have ran out of CO2 over a month period.

 

[devilishprune]

So what could be wrong with it that makes it not carbonate? The beer pushes out just fine, as far as I know. I don't know if it's residual pressure or not at this point, but I might go try and vent it all out, and then hook it back up to CO2 to check.

 

[devilishprune]

I just checked it and there is definitely gas flowing into the keg. My only thought would be that it's just taking a really long time for some reason? Anyone else have any experiences like that?

 

[devilishprune]

As an update to this, the beer in this keg still has no carbonation. Any more advice?

I've noticed that when I open the other 2 taps on the kegerator, they make a similar sound (sort of like opening a can of soda), while the tap in question does not. Does that help at all?