Paint problems

I had planned on air brushing the boday, and just using a small brush to paint the little things. however, tonight i tried to paint the engine and the paint is very thin and dried sort of transparent. I didnt use primer first, could this be the problem. P.s. i was using Testors Acryl, it came with the spray gun i bought.

Did you shake it up at first? You need to shake up most acrylic paints, because they are water-based.

stir them. durh.

the rest of the paints are fine but the one color is really, thin.
Its Testors Acryl Royal Blue if that helps...

PS I did shake them up...

t
PS I did shake them up...

Shaking won't do - you need to stir it well with a toothpick or something similar. At least this is what I do with Tamiya acrylics.

I tried stirring and shaking and i keep getting really thin paint... the paint has a lot of little paint bubbles throught it, is that a sign that its just not a good paint....
(the other colors contain no bubbles, and arent as thin)

Bubble get there when you shake the paint. Stir it like the other guys say. Also has the paint settled to the bottom ?
I bought a Tamiya acrylic metalic paint and all the paint had settled to the bottom, I had to shake and shake and stir and stir for ever until it all finally dissolved again. I just stir may paints prior to thinning them and airbrushing them.

problem solved thanks guy, i just stirred the stuff until my arm got tired and it came out great..