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Old 11-12-2007, 05:42 PM #1
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wowomatic's Avatar
Join Date: Mar 2007
Location: Chicago
piranha GTI leakage HeLP!

i left my co2 tank screwed into my GTI overnight and in the morning the tank was empty and wet. When I gassed up my GTI that afternoon it leaked out the barrel. I opened up my GTI and inspected all the orings/seals I could get to and compared them to my spares. Everything was fine. The one thing I couldn't get to is between the exp. chamber and the valve. Are there more seals in there? Is there anything else you think I missed? If you have ANY IDEA of what happened post it.
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Old 11-12-2007, 11:40 PM #2
Mr Virus
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Join Date: Feb 2004
Location: The "Group W" bench
 has been a member for 10 years
Ill guess and say that the cup seal is the culprit.
It doesnt mean that its could be just dry.

Once you check it for any dings or nicks on the cup face, just place a drop of oil on the side that contacts the valve, and put it back together.
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Old 11-13-2007, 09:28 PM #3
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Join Date: Oct 2006
Location: Burnaby BC, Canada
Did you remove the valve? That's where you'll find that cupseal as well as the Oring that seals the valve body to the main body. If the leak is definetly coming out the barrel then it's either the cupseal or the valve body Oring.
I just thought I'd take a quick peek and then the world went all yellow.....
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Old 11-15-2007, 04:34 AM #4
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plushdragon helped look for balloons

under the barrel is a small va that unscrews when you do the cupseal/and pin will fall get to the valve you need to remove the grip frame.
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Old 11-15-2007, 05:53 AM #5
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Join Date: Oct 2005
Don't leave the co2 bottle screwed in overnight :nododgy:.

As previously suggested, inspect the cupseal for damage. It's probably dry.
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