Typically it is coolant burning. Maybe headgasket, intake gasket? Sometimes you will see bubbles coming up through the radiator that are from a headgasket leak.
IF you pull the plugs and pressure test the cooling system for about 5-10 minutes, then spin the engine over with the plugs out, coolnat may shoot out the plugs hole to help confrim the leak.
Wednesday, March 5th, 2008 AT 7:52 PM