Tamiya Basic Spray Work airbrush sprays paint even when not depressing trigger?

Hi Jim! Sorry I can't help you with your problem but I do have a suggestion. If you go to the "Painting and Airbrushing" section of these Forums, you will have a lot of guys there that are very knowledgeable about airbrushes and should be able to help you. Give it a try.

Hope that this helps you.

Jim 

Stay Safe.

Thanks. I just re-posted. 

    Completely clean your airbrush..even things that you think may not be dirty. My Iwata sprayed after ai let off the trigger cause it was dirty. Also check your seal at the brush and make sure you did not roll the "O" ring creating friction between the flow and trigger.