115 yamaha motor runs fine but dies when speed up

[fishin222]

first of all it is a 115etlf yamaha boat motor runs fine but dies when speed up put on a new fuel pump and has plenty of gas presser compression tested good on all 4
hears what happened ran fine put away for winter now it starts sounds great runs smooth can speed up for about 5 sec then it gos back to idle or dies but will start and idle just fine try to go and it starts to shake and trys to die then goes to idle and sounds good. PLEASE HELP any thing helps

 

[99yam40]

Re: 115 yamaha motor runs fine but dies when speed up

If you have checked and confirmed the proper fuel pressure/vacuum and that there is not a restriction in the fuel delivery system then I would say you need to pull and clean the carbs

 

[seahawk12]

Re: 115 yamaha motor runs fine but dies when speed up

My T8 kicker is doing the same thing, throttle up and it dies, is there a throttle pump or something other than the carb that could cause this. It holds high speeds and hard throttle up. Starts fine. Any body?

 

[rowboater]

Re: 115 yamaha motor runs fine but dies when speed up

Possibly water in the gas