I am having the same issue with my 225 venom! I bought the boat from an uncle and it started out fine then started getting worse about being able to take off each trip. I've been able to get it to go by either priming the bulb or pushing in my choke while throttling up. The bulb gets a little soft but not flat. I've had the carbs rebuilt and the idle adjusted at different times and each seemed to help for just a bit. The mech. Put the motor on a dyno and it ran great until I made a run across the lake then when I stopped and tried to take off agin it started bogging down. Some one please help, it's driving me crazy(well it's actually not driving me n e where till I figure it out). Thanks and good luck