1999 Dodge Intrepid Engine Overheating after Head Gasket Re

Engine Gases in Cooling System


My car began overheating and I had it checked by a mechanic who said exhaust gases were in the cooling system; indicating a likely head gasket leak. I followed the Dodge shop manual closely and tore down the engine myself and took the heads to be presure cleaned/checked and resurfaced. There was evidence on the head and gasket of a leak into the coolant port near a couple of cylinders. I carefull cleaned the block top and didn't see any evidence of cracking. I replaced the head gaskets and intake manifold gaskets, and radiator and waterpump while I was at it. After completing the work, the car still overheats and I had it tested again and the mechanic is still finding exhaust gases in the in the coolant. Is there another test I an do? I'd like to keep the car for my son to drive to school.