I have an 87 115hp Yamaha outboard. The problem that I'm having is that whenever I give it a lot of throttle, it starts killing on me and I have to back it off to keep it running. I can get it up to about 50mph sometimes but as soon as I get going that fast it starts to die. It never completely kills. It runs perfect at low speeds. It doesn't seem to be missing at all, it just sort of bogs down. It's kind of jerky. To me it seems as though it's not getting enough fuel. I took the fuel filter out and it was as clean as a whistle. I don't know if you can tell by looking at them. Also someone told me to try unscrewing the gas cap while driving to make sure it's not an airflow problem. I tried that and it did nothing. I am very new to boat motors and really don't have a clue what to try. I would appreciate any advice. Thanks.
