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Old 12-17-2012, 03:58 AM #1
Mr_Fedora
 
 
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help!

ok so i had an asa, macro line and macro line fittings installed onto my trilogy pump. it still has the stock regulator. now its leaking air out of the barrel. i have no clue what to do or where to start. advice will be appreciated.
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Old 12-17-2012, 04:51 AM #2
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Odd question but did you pump it before airing it up?
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Old 12-17-2012, 09:29 AM #3
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Same thing happened to me. You need to pump before airing up, and sweet spot your reg. My reg wasn't outputting enough pressure to keep everything closed, so at random points it would start a barrel leak. Hope this helps!
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Old 12-17-2012, 11:45 AM #4
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If the gun is cocked (pumped) and it still leaks it could be that you need a new valve stem. But yea make sure it's cocked first and that your reg is outputting at least 300psi, usually cockers/snipers run good around 400-500psi depending on the valve and set up.
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Old 12-17-2012, 07:28 PM #5
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Quote:
Originally Posted by fulnix View Post
If the gun is cocked (pumped) and it still leaks it could be that you need a new valve stem.
My money would be on valve o-ring in this instance.
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Old 12-18-2012, 01:10 AM #6
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Quote:
Originally Posted by drgonzo View Post
My money would be on valve o-ring in this instance.
I highly doubt it. No air/dirt generally passes over the valve O-rings. Usually the only way these go bad is if you have used a caustic lubrication like WD-40. My fist bet is on it wasn't cocked or has too low of an input pressure. I've teched a ton of guns and have only seen valve O-rings be bad when you install the valve incorrectly and nic one on the way in. Other than that they usually don't go bad.
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Old 12-18-2012, 05:18 AM #7
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Quote:
Originally Posted by fulnix View Post
I highly doubt it. No air/dirt generally passes over the valve O-rings. Usually the only way these go bad is if you have used a caustic lubrication like WD-40. My fist bet is on it wasn't cocked or has too low of an input pressure. I've teched a ton of guns and have only seen valve O-rings be bad when you install the valve incorrectly and nic one on the way in. Other than that they usually don't go bad.
Age also eventually claims these rings, suboptimal lubrication is pretty common with markers that have some age on them, either through disuse/drying out or the use of older, less advanced lubrication (or bad lubricants entirely). I have seen many bad valve o-rings and actually I can't recall ever encountering a bad valve stem personally.

Remember the Trilogy is going on 8 years old now.

Come to think of it, the valve retaining screw could be loose too.
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Last edited by drgonzo : 12-18-2012 at 05:31 AM.
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Old 12-24-2012, 03:27 PM #8
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yea i ended up just taking my pump into the shop and they said it had something to do with the internal valve. thanks for the help.
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Old 12-24-2012, 03:51 PM #9
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Trilogies who have only seen co2 are also more likely to destroy those valve o-rings, I've noticed.
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