Hello Everyone, New to this site, but not new to tractors. This summer I purchased an IH 606 with the d-236 engine. Previous owner put on a brand new roosa master injection pump. Tractor will only start on ether. (all glow plugs are working), and no I am not using ether with the glow plugs. Also tractor runs hot, doesnt overheat, but runs hot enough to drip out of radiator overflow. I flushed the radiator,oil cooler, water pump impeller is working, new thermostat, fan belt is tight. Previous owner had head gasket replaced also a few years back. He said it didnt overheat for him but he had not really used it since the new injection pump was put on. Im thinking possibly a timing issue with pump. Suggestions???