Ticking noise from the engine of a 1982 Mercedes-Benz 300D Turbo (US model). We timed the IP, Injectors were rebuilt, valves were adjusted (0.10 mm intake, 0.35 mm exhaust). Timing chain had two degrees stretch. Our best guess was the chain tensioner, it coud be depressed a little bit.
mercedes-benz, mercedes, 300DT, turbodiesel, w123, diesel, car, auto, engine, om617a, OM617.952, motor