Help with airbrush

Andrew  Thanks for the advice

Mac

Did you shoot acryls through it?  Personally, I'd soak it in Windex (or ammonia) if it wasn't old, dried paint.  The other option is soaking in lacquer thinner, that will remove about anything, even old and dried stuff, but it's stinky.  I know when mine clogs up, I use Vallejo's airbrush cleaner, that stuff removes just about any acryl.  In the future, you should be able to (assuming you're using acrylics) shoot Windex (or store brand glass cleaner containing ammonia) through the gun right after painting and have it reasonably clean.  

I've also purchased a cheap (75 dollar) ultrasonic cleaner online that I toss the entire gun in for an 8 minute run and things are clean as a whistle.  Just depends how much you want to spend.

In your case, sounds like the nozzle / needle / outlet spout are choked up.

Gentlemen I followed your input on this matter and I'm glad to say air is now coming in and out of the brush. but no paint is coming out. Can you use Rubbing Alcohol to clean the entire brush?

Thanks

Mac

Is the compressor regulator open?

Knowing what kind of airbrush it is might help.  When you cleaned it, did you (assuming it's a typical nozzle and needle) pull and clean the nozzle and needle only, or the air check valve as well?  Assuming it's something along the lines of a double action Badger, did you seat the pushbutton properly?  Is the air check valve covered in paint and possibly stuck shut?  Is the air button sticky?  Did you reassemble correctly?  There's a lot of variables.