I have an 1998 Evinrude Intruder 175 and at idle the primer bulb will lose prime. When you go to take off the engine dies, you reach back and it takes alot of squeezing to get the prime back. It gets so hard it feels like its just all air inside. But the boat takes right off. It doesnt do it everytime at idle just here and there. If anyone has had this problem before and/or knows how to fix it please feel me in. Thanks Joe