Have a 97 j150exeue that I can prime up and starts up and runs for a few mins then Boggs down and I can pump the primer bulb and starts to run like it should for few mins and then I'll have to pump the bulb again. See no leaks. Replaced fuel lines and primer bulb. Have also ran off a portable tank and still some issues. Looking for recommendations. Have also put a aftermarket vro pump on and run even worse then it did with old pump