Hello dear people, can someone give me a hint how to check the AdBlue nozzle? Simply disassemble and see if AdBlue is sprayed out during operation? I don’t care about the amount because I don’t have a diagnostic device. Does the nozzle spray directly from the start of the engine or only when the engine is warm? And when I plug the AdBlue hose off the nozzle: Does AdBlue come out there, so that I can check the AdBlue pump for function? ipps Uli It’s about an Opel Vivaro BJ2017 125hp / 92KW