[liquidbrewing]

So I kegged my yummy stout, 10 gallons, two five gallon kegs a couple weeks ago and put one on the gas last week.  Today I was curious, so I checked the other one, yep, no pressure!!  I noticed the poppit on the gas in post doesn't seat correctly when not under pressure.

Is this letting oxygen in, since the co2 was let out?  Or should the beer be fine when I get a chance to gas it fully??

[tygo]

It might have let some O2 in but I wouldn't worry too much.  If it was pressurized initially and carbed then the CO2 coming out probably kept the majority of the O2 at bay.  Even if not that's a pretty minor leak so there was probably enough CO2 pressure just from what was coming out of solution in the beer to keep the influx minimal.

Replace the poppet and slap on some keg lube and you should be good to go.

[tomsawyer]

If you just charged the full keg with gas initially and then removed the gas line, the beer probably just absorbed the CO2 and reduced the pressure without the poppet being a leaker.