It runs well but I cannot get a pee stream comimg out of top stream hole. I am not sure of the year but I thinks it approximately 1979. I have an older 6 hp and it does not have top pee tube. Nothing blocked. I replaced impeller and it is the same. I remover thermostat and it is the same. I get some water coming out of exhaust hole. There is warm air coming out of top pee hole. HELP HELP THANK YOU