Joe, I found a small leak that could be where the radiator fluid drops are coming from. What looks to be where the temp gauge screws into the housing on the engine block , that sits right behind the injection pump, and in front of the first 2 spark plugs. It is wet with radiator fluid . could it be leaking here and flowing down and onto one the coolant hoses that are down below, and on the opposite side. Does this seem plausible? It is a fact that the temp gauge is leaking. Is there a washer or something that needs replaced to stop the leaking around where the temp gauge screws in? I took a wrench, and tried to tighten it. It seems tight