Paintball

[whooper]

I received my first Classic Automag and am having major air leak problems. I air it up and air leaks out the rear, then I squeeze the trigger and air leaks down the barrel continuously and won't recock.

History: Received a stock level 7, 68-Classic in nonworking condition. I completely disassembled the marker, cleaned all of the gunk out of all the nooks and cranies, and replaced every o-ring. I, also, changed the stock grip and double trigger for another stock grip with a single trigger and AGD rubber grips - adjusted the trigger rod for a 1/16" gap behind the trigger.

I initially aired it up after reassembly and had massive air leaks and sputtering when the trigger was squeezed and held. I disassembled and oiled all of the o-rings more liberally, and also found that the small teflon on/off o-ring wouldn't stay seated (was finally able to get it seated and stay). Reassembled and aired up (I am mindful of the liquid CO2, so I kept the bottle upright). The marker worked flawlessly other than a minor leak at the macroline and 90 degree swivel.

I aired it up again in a few days and had the problem as stated at the beginning of this post. No rhyme or reason that I can tell. Again, I was mindful of the liquid CO2.

Any thoughts?

[ljpiller]

Are you using a spacer, or spring in the power tube? If it isn't the correct length it may leak down the barrel.

Try turning down the velocity a little, if it is set to high it will leak out the back. Leaking out the back always has to to with the regulator not working properly. Make sure you clean off the brass regulator piston and ensure there isn't any gunk anywhere on it. Also check your spring pack and ensure it's greased up. I was restoring my Automag that hadn't been touched since '93 and the grease has turned into chewing gum.

You can also put some oil directly on each o-ring when you disassemble it. If it hasn't been oiled in a long time you will want to make sure they are well lubed.

[secretweaponevan]

Originally Posted by whooper

I air it up and air leaks out the rear

As ljpiller stated, this is a reg problem.
The reg piston needs to be properly greased, you are getting liquid CO2 into the gun (be sure you aren't using a siphon or an anti-siphon tank in a vertical position as it will suck liquid), or your reg seat is shot (looks like a flat o-ring).

Originally Posted by whooper

then I squeeze the trigger and air leaks down the barrel continuously and won't recock.

If air leaks down the barrel while the trigger is pulled, your white teflon on/off o-ring is shot.
If it doesn't leak while the trigger is pulled keep the trigger pulled and look down the feed tube and see if the bolt resets fully. If it doesn't you either need a new bolt spring, or the power tube o-ring or spring/spacer is hanging up the bolt and they will need to be inspected replaced.
If it does, but when you release the trigger the bolt goes forward, carefully inspect your sear. It might be worn, or cracked at the pivot hole.

Let us know how you make out.

[whooper]

Thanks, guys, for the comments. I'll check the spacer, .22, and replace with a shorter one. This basically the only thing that I haven't done to it. I did check the spring pack when I disassembled it the first time. It looked like it was greased, i.e. looked like graphite paste. Is that what it should look like? If I were to grease it more, what do I use as grease?

[Scott Hudnall]

You'll find serious resources at automags.org, it's a wealth of information. Automags.Org: