Fuel injector quality is a decisive factor in the efficiency of motor vehicle engines. Within the fuel injection sector, Sonplas created a specialized and formerly patented method for valve leakage testing. The manually loaded test bench has been designed for different gasoline injectors. It offers high flexibility in testing injectors with different geometries due to a simple change of the injector fixtures and a single changeover dialogue in the software. The fully automated control software allows easy handling and high flexibility. Results and current values are displayed in the main window to guarantee an easy overview of the process.