spotted coolant one day coming out tail pipe engine quit running soon after refilling radiator so i filled radiator with engine off and water came out intake which had me perplexed since thier isnt any water in the oil so i taped off intake and held water hose in radiator while someone else turned engine by hand each cylender shot water out in time thought it may be the heads but no compression coming through radiator and a cracked head would atleast run or would have been water in oil have seen intake manifold gaskets blown out but not sure if im looking at one blown in i do have fuel and water mixed on each spark plug 30 years of working on engines and building them n this is a first on me