I HAVE A MERCURY OPTIMAX 225HP YEAR:2003... I HAVE A HUGE PROBLEM WITH THIS ENGINE..... WHEN I RIDE MY BOAT AND AFTER PASS THREE THOUSAND RPMS THE ENGINE JUST STOP.... AND I START THE ENGINE AGAIN WITHOUT PROBLEM AND WHEN CONTINUE MY RYDE AND PASS THE THREE THOUSAND RPMS HE STOP AGAIN... HE ONLY STOP WHEN I PASS THE THREE THOUSAND RPMS AND I DONT KNOW WHAT TO DO TO FIX IT!!!!! I NEED HELP!!!! I CHANGE ALL O RINGS FROM THE VAPOR SEPARATOR AND ITS THE SAME AND I CHANGE BOUTH FUEL PUMP AND HE CONTINUE WHIT THE PROBLEM!!!! PLEASE HELP ME!!!!!!!!!!!!