Watch a live demonstration of CAT C7 and C9 HEUI injector testing on the JZ-326S test bench. This video walks through the complete testing process, showing how the JZ-326S handles high-pressure common rail and HEUI systems with precision. You'll see step-by-step setup, real-time results, and practical insights into diesel fuel system maintenance. Ideal for technicians and service professionals evaluating reliable, efficient testing solutions for commercial vehicle engines.