2003 johnson just dies!

My 2003 Johnson 175 was running fine all day,then at wot it very suddenly shut down,It would restart But sputter and shut down soon after,repeated attempts to start-will stop starting all together,after sitting for 20 minutes it would start and run at an idle,it would even engage into gear,but only lasted a few minutes and then it would sputter and shut down.I replaced fuel filter/water separator and inline fuel filter,still shutting down.I put the fuel line(after the fuel filter/water separator and before the pump ball) into fresh gas and its still shutting down.I should add that pumping the ball wile running doesn't make a difference.I can see through the inline filter and there appears to be ample fuel wile running(more fuel when I pump the ball),I have good water flow and I don't believe its over heating.Has anyone had this happen? Am I missing a fuel filter somewhere?Is there a relay or thermal overload?Any help would really be appreciated,thanks Ron