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Overview
This video documents an owner walking through a cylinder leak-down test on a high-hour (8,300-hour) TS115A to isolate the source of an engine problem. It explains the diesel-specific procedure, removing injectors, calibrating the tester, then listening at the intake, exhaust, radiator, and oil fill tube, and concludes the cylinder itself is sound while pointing to the fuel injection pump as the culprit. Best for owners doing similar diagnosis.
Posted by the Guy in WY channel, which appears to be an owner-operator documenting hands-on repair work on their own equipment.