If it is the solenoid, you'll be able to tell without air.
I had a bad solenoid once, when I shot it with no air the first click was more feint than the rest. It was similar to fsdo. Unfortunately the ****bags that sold it to me as new didn't think I would notice the stripped screws on top of it. So there was no way I could take it apart. If not, I'm in a similar situation right now and it's probably the reg.
Let me elaborate on my bad solenoid advice. It took a couple trigger pulls to even get the solenoid to click and the first couple were real feint. So if you're not hearing erratic solenoid clicks before or after you're pulling the trigger, rule that out.
Last edited by Word? : 12-02-2012 at 01:38 AM.