Common Rail Pump and Injector Tester: BOSCH CP1,CP2,CP3,DELPHI,SIEMENS,DENSO HP2 AND HP3. ... rail pump and injector tester for CR high pressure pumps is to provide the desired signal to drive the solenoid in the pump ... under the driving signals by the tester.* To test injector spray atomization, To connect a CR injector to a high pressure fuel source ...