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Home Brew Forums > Home Brewing Beer > Bottling/Kegging > why are my kegs over carbing?
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Old 07-27-2012, 01:44 AM   #1
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Default why are my kegs over carbing?

I've been force carb-ing my kegs. I keep the co2 at 11 psi and eventually(after two months) the beer overcarbs and all I can pour is foam. Any ideas on what I'm doing wrong?

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Old 07-27-2012, 01:58 AM   #2
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I've been force carb-ing my kegs. I keep the co2 at 11 psi and eventually(after two months) the beer overcarbs and all I can pour is foam. Any ideas on what I'm doing wrong?
That doesn't seem right. Assuming a constant pressure of 11 psi from the beginning at fridge temperatures, the beer simply can't get more carbed up over time.

Either something is happening in the lines/keg that is causing a problem- like hops debris plugging a poppit, the regulator creeping up above 11 psi with time, the temperature rising, etc.
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Old 07-27-2012, 02:00 AM   #3
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How much beer line are you running, and what size? Make sure your line isn't hanging below the top of the keg.

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Old 07-27-2012, 02:30 AM   #4
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Either your line is too short to begin with, or you refrigerator is getting colder so there is more co2 being absorbed even though the psi remains the same.

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Old 07-27-2012, 02:48 AM   #5
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Or one other idea is that the gauge is reading wrong. Maybe 11 on the gauge is really 18.

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Old 07-27-2012, 09:33 AM   #6
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+1 to basic physics. Either your beer is colder than you think (more CO2 has been absorbed = over carbonated) or your lines are too short (too little resistance = foam in your glass).

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Old 07-28-2012, 01:24 PM   #7
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My lines are plenty long enough, but I wasn't aware that a colder fridge = increased co2. I'll have to turn the temp down and see if that works. Thanks!

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Old 07-28-2012, 01:32 PM   #8
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How long is "plenty long enough"?

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Old 07-28-2012, 07:10 PM   #9
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My lines are plenty long enough, but I wasn't aware that a colder fridge = increased co2. I'll have to turn the temp down and see if that works. Thanks!
also when you make the fridge colder change the co2 pressure. Purge and then reset a couple psi lower otherwise you are just going to make the problem worse. I wouldn't recommend adjusting the temp warmer it will also make the problem worse if it's already overcarbed.
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Old 07-28-2012, 11:19 PM   #10
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How long is "plenty long enough"?
ya know, plenty!
Without measuring I think I originally put 8' on each line.
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