At DDEC Detroit Specialists we have our own injector tester for the testing of injectors. Some of the injectors leak from the solenoid o-rings and may not require replacement of the injector, just the solenoid o-ring. Can save $$$$ to repair rather than replace the injector.
We use our diagnostic tester to check for codes first and then remove the injectors if required for further testing. We also supply and fit new injectors to your vehicle.