My outboard Johnson 115 hp dies when running at 3/4 throttle and above. It looses power and acts as if it isn't getting gas. A sound I can only spell as phoot comes from the engine and it dies. After a restart it may do it again immediately or take a minute or so. I've replaced the ball and hose fitting coming from the top of the tank and feeding the engine. I also replaced the fuel filter and have fresh gas. Any ideas appreciated.
