C7 C9 HEUI Injector mounted & tested

In this walkthrough, we highlight key design ideas and how they translate to performance. Watch as we mount and test a C7 C9 HEUI injector on a dedicated diesel test bench, demonstrating how high-pressure oil and ECM electronic control achieve precise fuel injection. You'll see the complete testing process including flow rate measurement, leakage checks, and injection response analysis for Caterpillar C7 and C9 engines used in excavators, loaders, and heavy trucks.