See the solution in real use and note how it behaves under normal conditions. This video demonstrates the testing procedure for the 396-9626 Diesel Fuel Injector for Engine C7.1. Watch as we place the injector into a specialized pressure tester, activate the test switch, and observe the data on the screen. You'll learn how key parameters like full load fuel injection quantity, oil return quantity, and idle fuel injection quantity are measured to determine the injector's performance and condition.