Satin black powdery finish

[billjam]

I am just spraying some old cabinets in a satin black finish and managed to get a good even sheen on two of them then ran out of paint. Got more paint, mixed it up and now I can't get that smooth satin finish on the last panel.
The finish is coming out all powdery, it's like the paint is drying before it hits the job.
Paint is el cheapo acrylic lacquer from local car parts shop.
I have played around with different thinning ratios and air pressures but just can't seem to find the right combination.
Got any hints?
More thinners, or less?

[962porsche]

because lacquers are so effected by the weather it will make them a PITA to spray at times .
changing the amount of thinner you use may not always do to much .
you need to change the speed of the thinner it's self .
if it's coming out of the gun kind of dry and stringy looking you would need to change to a slow or ultra slow thinner .
if it's damp or there is allot of humidity in the air you would want to use a retarder .
because lacquer is lacquer it is all intermix products as long as it's a lacquer based .
so if you need a retarder you can go to your local home store and pick up the retarder that wood workers use for there lacquer finishes .