Married2Allis
Well-known Member
My neighbor brought home a nice 1655 diesel, some blue smoke on startup until it warms up then exhaust is almost clear. He changed all the fluids including the coolant. Went over one morning and he started it ran and it for about 10 minutes when we noticed exhaust (or steam?) coming out the vent tube that runs down from the valve cover. He shut it off and heard the coolant boiling and steam was coming from the radiator cap. Turns out the bottom hose clamp was loose and radiator had drained out. And ofcourse the temp gauge was busted. Engine block was pretty warm but not hot enough to burn fingers. Motor sounded normal before we shut it down. Waited an hour for it to cool down and refilled the radiator making sure it was topped off. Started back up and ran fine, same blue smoke until warmed up then clear as before -- nothing coming out of the vent. Did not see any coolant in the oil. What could have caused the vapor coming out of the vent tube and would it need to be torn down?