Auto Body PaintMay 10, 2010May 10, 2010what makes exterior car paint bubble and crack after it is painted? Share Tweet Pinterest 1 thought on “Auto Body Paint” Freeautomechanic May 10, 2010 at 7:24 pm Could Be several Factors. The cleaning solvent used to prep the car before painting. Too much heat when drying. Poor paint(mixed improperly before spraying) Comments are closed.