I have a Yamaha 90TLRC 3 Cylinder. I started having this problem last year and drained all fuel and did a proper winterize on the boat.
First thing this year, I completely rebuilt carbs with new needle valves, seals etc... They were spotless to begin with. I also replaced fuel filter (water...
So this year my carbs were gummed up with this crap we call gasoline with ethanol. So needless to say, my spotless carbs had crapped up needle valves. After replacing both the high speed and low speed needle valves and getting everything running smooth, I decided to take the fuel pump apart to...
