How do you perform a basic PT injector flow test on a bench? A typical injector test procedure: Mount the injector in the bench's firing fixture Connect the bench to a calibrated PT pump (or use the bench's internal pump) Set test fluid temperature to 100–110°F (38–43°C) Run the pump at a specified speed (e.g., 500–600 RPM for injector testing) Fire the injector for a set number of strokes (often 500 or 1000) Measure the fuel collected in a graduated cylinder Compare to factory specs – for example, a Big Cam IV injector might require 28–32 mL per 1000 strokes Adjust metering orifice or plunger travel as needed, then retest https://www.cq-longshine.com/cummins-pt-test-bench