My minimag will not engage! HELP!

[minimagCHAD]

My minimag will not engage my nitro tank into the gun. :You can hear it engage into the C/A, but no air is flowing into the gun. Also, on occasion, you can hear the bolt vibrate with a little air coming out (Sounds like a hiccup. I thought it might have been the air chamber but i cant take the power tube off! Please help me!!!!
Thank you!
Chad

[Xzion]

Do you hold the trigger down when you open the valve? are you giving the 'mag valve a nice quick burst of air?

[Autotrigger]

Minimag won't engage!

Is your velocity adjuster turned in far enough? Do you have enough pressure in your tank? Just a couple of often over looked reasons for what you are experiencing.

[Predater]

There could be tefflon tape jamed in the line someware. This normally doesnt happen but i have sean it before.