Common rail test bench BF1178 used to test common rail injectors and pumps, like bosch, simens, denso, delphi etc ... the performance of the common rail pressure limiting valve 8. Test the tightness of the high-pressure common rail injector and observe its ... following functions: it can test HP0 pump, PIEZO injectors, and one time can test four injectors for common rail injectors. Common Rail Test Bench