>>5229013take the fucker apart, clean inside of part #7 with pipe cleaner soaked in airbrush cleaning liquid(or, depending on material used in orings, acetone). i highly recommend buying dedicated cleaners that are dirty cheap but do the work. next,soak whole nozzle(part #4) in acetone or nitro and leave it overnight. in the morning take syringe with thin needle, fill it with acetone or nitro and and blast that shit through nozzle. if done correctly, your airbrush should work as new.