Donald and Rob many thanks. As it looks now afther the sea trials both cummins running smooth idle and no probs at WOT at 2700 rpm It seams previous owner maintained the cummins well. Oil analize did not show any issues
I did not sea a airintake grid heater on both engines. They help a lot during cold start smoke reduction in cold temerature conditions. Is it possible to reinstall this gridheaters? Any thoughts