Spray lighter coats. Surface looks as if the lacquer boiled and remained grainy. Lacquer and surface to be sprayed is too hot. When it is over 100 deg. F, it is best to stop and do something else.
Film looks whitish, cloudy, or milky.
Use air assist hot spray airless for clear lacquers in summer and winter. To much air pressure to pump and air assist can cause tiny bubbles or gassing along the grain. Film looks bluish, or iridescent. Extend Dry Times of oil based products in cold or humid conditions. Runs and drips of lacquer that collect by gravity in thick ridges.