Checked EGR, NOT STUCK cannot check any further to see if it operates electrically. But with plug out the engine seems smoother but still black smoke but not as much. So am I on right path or just a red herring? No light on dash to say water in filter bowl. Slight leak of fuel around base of one injector. There is an intermitancy of the engine pulling also. Checked MASensor, wasn't dirty, two bare wires seem very clean inside.