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Old 04-12-2012, 03:43 AM   #1
Brak23
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Default Cant find keg leak

I purchased a keg recently off craigslist, the guy gave me the keg which was pressurized to show that it worked right. And he also gave me new o-rings to replace the ones on there. So I took it apart, cleaned it all, and put it back together like usual (this is my 3rd keg). And everything is great. I didn't check pressure because I assumed it worked (error on my part). And I transferred my beer into it and now it wont hold pressure.

Ive done the soapy water check, nothing. Ive made sure all the in/out pieces are on tight and even checked the top seal and it fits tight. No sounds, no bubbles on tests. I can't figure it where its leaking but its obviously because of me taking it apart and putting it back together. But im not sure what to do to check where its leaking and how to fix it. Any tips on what I can do?

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Old 04-12-2012, 05:05 AM   #2
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How can you not know where it leaks? If you gas it, do you hear the co2 escape? If it is a slow leak then gas it and spray with soap again. I suspect through the post lines. Or did you gas it in the first place or just let it build pressure on it's own?

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Old 04-12-2012, 05:43 AM   #3
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so if the thick soapy water trick doesn't work I don't know what does. You should try using a basting brush and brushing it on; sometimes the soapy water is too thin if it's sprayed and may not actually have enough to bubble at the leak.

Also, are you sure you're getting gas into the keg in the first place? if the post/poppet is bad you may not be getting gas in at all.

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Old 04-12-2012, 06:02 AM   #4
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starsan also work great as a snoop for leaks!! pressurize and disconnect the gas and spray it down! the only other thing i can suggest is fill up the bath tub an submerge the whole keg...

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Old 04-12-2012, 06:12 AM   #5
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I will try the soap again.

The keg works as it fills up and holds pressure for a little bit, but when I leave it for a day, it looses pressure. About 5psi per 24 hours.

I can't hear any leaks, from anywhere from 10psi to 30psi on the tank. The line and everything works fine. I know its a keg leak because I disconnect the CO2 line and it still loses pressure.

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Old 04-12-2012, 06:15 AM   #6
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Quote:
Originally Posted by Brak23 View Post
I will try the soap again.

The keg works as it fills up and holds pressure for a little bit, but when I leave it for a day, it looses pressure. About 5psi per 24 hours.

I can't hear any leaks, from anywhere from 10psi to 30psi on the tank. The line and everything works fine. I know its a keg leak because I disconnect the CO2 line and it still loses pressure.
is anything in the keg or is it empty?


Edit: just read that you have beer in there...... the co2 is going into the beer.... everything is OK!!! if its at room temp, leave the gas on there at 30psi for 2 weeks and it will be ripe...
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Old 04-12-2012, 06:15 AM   #7
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when I have crazy hard to find leaks I almost always assume it's the keg lid. When poppets leak they're pretty easy to tell since the area is limited and they show up easily with the soap test method.

You could try to take the lid off; make sure the area on the lid and keg where the big o-ring sits is clear of any debris and smooth. then hit the oring with some food-safe silicone or lube to promote a good seal.

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Old 04-12-2012, 12:28 PM   #8
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I had a similar issue and eventually found that the hose clamp on my gas line had pinched the hose and caused a small leak. Could not see it because it was under the clamp. Disassembled it, trimmed the hose and replaced the calmp and no more leak.

Drove me crazy for a day or two.

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Old 04-12-2012, 01:37 PM   #9
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Are you hitting it with CO2 and then taking the gas line off? Your beer takes on CO2 so if you hit it with CO2 and take the gas line off, the CO2 in the keg after a day will be less because it is now in the beer.

If you are leaving the gas line on, check everything. All the keg seals, the gas disconnect, the line, the reg, everything. It doesn't have to be at the keg.

A good way to test for leaks (when empty) is to stick it upside down in water. If you see bubbles, there is a leak.

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Old 04-12-2012, 01:47 PM   #10
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+1, Exactly it sounds like what the posters above have stated. I bet you are taking it off the gas. Until your beer reaches an equilibrium its gonna keep absorbing the co2 and your keg pressure will drop.

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