92 200 pro-v.....


I changed the impellar and poppit valve to the new style.....started it up and still wont pump, I let it run for a little longer and still nuthin. I pulled the trermostats and they were opened up all the way.....where should I go next. could it be vapor locked? Ive got it running in a drum full of water. used to start peeing as soon as it fired off. Im lost