I have a 99 Chevrolet Tahoe w/ Vortec 5.7 Its getting water in the oil, and blowing steam/dripping water from exhaust, Runs smooth no engine misfire. Wondering if its a head or intake gasket? Change the oil, start it and fill the radiator. Water leaves almost as fast as i can pour it in. How can i tell if its a cracked head or intake? or a blowed head or intake gasket?