I have a 2007 320 with 5.7s. The water impeller is the worst designed to get to replaceable part on this motor. We are talking hours per engine. I had to unbolt the fuel pump on both and lay it to the side. Not much room for that either. I did it onc...
Does on the lift mean the water intake for the heat exchanger is out of the water? That would be a no water flow. In the water, have you checked the sea strainer?
