I hava 90 hp 2 stroke 2002 yamaha outboard that runs good for a wile sometimes a long time sometimes for a short time. You will be runing along at about 4000 rpms and it wil just fall on its face, it will not shut off just go to a idle, sputter around for a few minets and take off again. Changed water seperator, everything looked fine, checked filter under cover and went to an external tank, and still the same problem, any suggestions, thanks.
