Paintball

[dauntless15]

hey veryone . i need some help . my pgp just started leaking down the barrel after i installed a custom bottomline with a dummy co2. i did not alter the valve at all . is it a bad cup seal ? or what . any ideas ?

also i need to prevent roll outs . is there any home mods i can do besides nail polish . or scotch tape? or is these the oly home mods to prevent roll outs . and i dont have the time or extra cahs to send it out to get wedgits. can i do wedgits at home ?

[Schmitti]

The one thing I could think of is that the dummy 12 gram could be pushing on the piercing pin/cup seal assembly and holding the valve open. You may want to look at how the dummy is seated and also compare the opening in the face with a uesd 12 gram cartridge to see if the hole is the correct size. If the hole in the dummy is too small I could see the piercing pin not seating correctly.

E

[dauntless15]

well it also did it with a normal 12 gram .

[Schmitti]

my pgp just started leaking down the barrel after i installed a custom bottomline with a dummy co2.

So was it leaking with a 12 gram prior to installing the adapter or only after you installed the adapter.

You may have torqued the adapter in far enough that it's mashed the piercing seal enough that the adapter/12 gram is now holding open the pin/cup seal.

You may want to get a new cup seal.... but the kind with out a piercing pin, especially if you aren't going to use the gun with 12 grams any more. If you are going to continue using 12 grams, then maybe see about a new piercing seal.

I'd also wait until one of the other gurus chimes in.

E

[dauntless15]

well it worked fine . and then i cut a hole in the bottom of the tube and instaled a dummy co2 with a macroline fitting comeing out . and then i took that all out and then i put in a 12 gram and it was leaking down the barrel . and if the co2 was wedged in there it whouled leak becuz the pic has to come twords the 12 gram to fire . other wise its pressurized

[Schmitti]

Did you remove the valve prior to cutting the hole. It's very possible that you got a piece of metal or debris between the cupseal and valve when you cut the hole.... which now means that your cupseal may be shot.

and if the co2 was wedged in there it whouled leak becuz the pic has to come twords the 12 gram to fire . other wise its pressurized

This last bit made absolutely no sense to me

E

[dauntless15]

yes it did
i have a cup seal from an older pgp . i may just remove the pircing stem and play with it to see if it will work . this is a cartridge valve

[c6quad]

Originally Posted by Schmitti

The one thing I could think of is that the dummy 12 gram could be pushing on the piercing pin/cup seal assembly and holding the valve open.

E

sorry, but i'm going to call you out on that one Erik.

if the dummy is pushing the pierce pin, it would be holding the valve closed, not open. the only way the dummy could hold the valve open is if (upon firing) the pierce pin gets stuck inside the dummy.


sounds to me like you need a new valve stem or it may have sucked some trash through the valve and got on the valve stem cup seal. take it apart and check for any debris. if no debris is found, check the brass face where the cup seal presses against and the cup seal for any small nicks.