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Old 08-03-2012, 10:22 AM   #1 (permalink)
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Whoooooooooosh!

Ok. I am having all sorts of fun with my markers lately.

My Automag with a classic valve, is having issues. I thought I had it firing fairly decently the other week. I know these things like oil though, so I was cleaning my guns and I figured I would throw some in. Put it back together and it starts leaking like crazy down the barrel. Pull the trigger and it stops but doesn't fire. Release the trigger and it is leaking again. I play around with the body screws and realized there is a VERY fine line with how tight I can have them. Too tight and I get nothing. Too lose and it leaks. Somewhere in between and I can get a couple of shots before it is messed up again. I am kind of an automag noob....I have been using them forever (10+ years) but never had to trouble shoot one before. Ideas?
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Old 08-03-2012, 10:28 AM   #2 (permalink)
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Disassemble and reassemble to just make sure everything is in just the right place? Possible an oring isn't seated just right or some fuzz of something got it. I have noticed that mags don't work right if overly tightened on the rear screw. However, mine isn't that picky as yours sounds.
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Old 08-03-2012, 10:33 PM   #3 (permalink)
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Yeah, Classic valves are usually pretty bullet proof. You may have some dirt somewhere. When you were cleaning the valve did you disassemble it? The fact that it stops when you pull the trigger back indicates it should be an issue in the powertube. pull it apart and make sure everything is clean and oiled. How long has it been since you changed the o-rings on it? Might be time if you've had it for 10 years.
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Old 08-03-2012, 10:36 PM   #4 (permalink)
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there are only 2 o-rings in the power tube. take out the bolt, and the brass head on the revealed tip would be where you access them.

can it also be your sear failing to catch?
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Old 08-03-2012, 11:16 PM   #5 (permalink)
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Here is a VERY YOUNG Tom Kaye doing the original Automag training manual. It is in several parts but it will teach you everything you always wanted to know about your Automag, but didn't know where to ask.

Automag video with Tom Kaye pt1/9 - YouTube
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Old 08-06-2012, 03:06 PM   #6 (permalink)
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That video is the bomb diggity.
Tom Kaye explains everything perfectly and methodically. I knew everything about mags before I ever had one in my hands and could tech it flawlessly. It is an incredible resource and shows TK's dedication, and mustache.
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Old 08-20-2012, 11:55 AM   #7 (permalink)
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Took it part and cleaned it up some. Was working fine, for the most part. Was shooting around 310 but was consistant. Lowered it and the first shot was hot then it settled around to 230. Typical on the first ball hot shot, I can accept that. Then it was freezing up a little bit....then nothing at all. Pull the trigger and it felt hard and it wouldn't shoot.
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Old 08-21-2012, 09:52 PM   #8 (permalink)
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using 12ies, bulk co2 or hpa?
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Old 08-31-2012, 09:32 AM   #9 (permalink)
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using 12ies, bulk co2 or hpa?

Both. HPA is making it do the same thing, so now I know my valve isn't freezing because of liquid CO2.

I took it almost all part and the orings all look good. Everything is clean.

Last edited by elraido; 08-31-2012 at 09:36 AM.
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Old 08-31-2012, 10:13 PM   #10 (permalink)
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Does it give you a hot first shot again if you just let it sit for a while?
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