TiPX Leak issue

[COB]

I have several TiPX markers that work fine. Unfortunately, I have one that is leaking. When the 12-gram pierces it dumps all the CO2 without entering the regulator. I have adjusted the CO2 cap to ensure a tight seal on the pierce assembly. I have disassembled the pierce assembly, checked, cleaned and lubed the internals. I replaced the pierce seal with a new one. After reassembly, it still dumps all the CO2. What am I missing?

[Trbo323]

Where is it dumping from?

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[COB]

The dump is at the pierce seal / assembly. I'll try replacing the transfer tube O-rings, but do not think the gas is getting that far into the system

[EvilCreature]

I just know they can shred if you look at them wrong, at least the ones I have. Maybe I need slightly more robust orings.

[EvilCreature]

Usually a busted transfer tube oring would be a slower leak than a "dump" unless maybe it just doesn't have a transfer tube oring.

[COB]

Yes, there are intact O-rings on the transfer tube.

[nak81783]

Since it’s hard to diagnose where leaks come from, given the clamshell design, you may want to swap components one by one with one of your non-leaking TiPXs to help troubleshoot.

Do you have remote adapters installed? If so, does it leak when hooking an air source up to the remote adapter? If so, that might be a cheaper way of diagnosing the problem than dumping one 12g after another.

[COB]

I have a remote line adaptor. I installed it with a dead cylinder tight in the front CO2 chamber. When air was applied, it blew out the front of the pierce system. No air entered the regulator or valve. That is how I determined that the issue is at the pierce assembly. Of course, I could be wrong.

[gnarlynick]

Since it’s hard to diagnose where leaks come from, given the clamshell design, you may want to swap components one by one with one of your non-leaking TiPXs to help troubleshoot.

Do you have remote adapters installed? If so, does it leak when hooking an air source up to the remote adapter? If so, that might be a cheaper way of diagnosing the problem than dumping one 12g after another.

This is a good suggestion. Swap the puncture valve from one of your non-leaking TiPXs and run through the leak test again. Should tell you if your suspicion of it being the puncture valve is correct, or tell you it's downstream on the transfer tube or beyond.
If it is the puncture valve, I'd suggest disassembling it again and replacing the piston (37 in the diagram, size 012) and pin (42 in the diagram, size 006) o-rings again. Remember the puncture pin o-ring just slides on the shank end of the puncture pin, it does not go into the little groove beyond that area. I would also take a look at the puncture seal (36 in the diagram), that may also need replaced