Badger Air Brushes

I have problems with my Airbrush. Air comes out but no paint?
I use a badger 200nh with compressed canister. I use acrylic that has been thinned with water. The brush is clean, and it starts to work but then the paint dies on me. I have then cleaned it again but still have the same problem. Could it be the air pressure? The canister does get cold and i know when it does this it loses pressure. It sounds like there is still alot of air coming out though. I clean it with an Airbrush cleaner so im sure its clean and there are no clogs. I have noticed that the colour cup tends to bubble when i apply the air. Its driving me mad and Santa will defo be good to you if you can help.
put some paint in it?
Easy Airbrush T-Shirt Painting with Badger Airbrush