ooo something I can help with!!
Read your users manual and it'll help you identify parts and how to properly tune your marker. If you don't have one, you can read it
here.
If it's all set up properly and you're still having problems, it's most likely a pinched or blocked hose that run to/from the solenoid.
in short, to get it running:
1)Set you HPR to around 200psi(the gauge on the marker will tell you the HPR pressure)
2)Screw your LPR in until the bolt cocks and you hear a leak.
3)Turn the LPR about 1/4 of a turn back, or until the leak stops.
4) At this point the marker should fire. To adjust the velocity, you turn the HPR up and down
If you hear a leak before the bolt is cocked, it means you have a leaking hose; These are a ROYAL pain to locate and fix because it means you hav e to poke around inside, find new hose and replace the leaking one.