Yamaha problem running badly

[earthdog1970]

Hi after putting in a lot of work on setting my self up with a bigger outboard i am still having a problem with it running badly i have had the carbs out and ultrasonic cleaned them and they came up very well, have had fuel pump apart, and filter , new plugs checked everything i can think of but its still not right, so can anyone help , have added video just to let you see what its doing.

[EnglishLes]

Do you have a link to the video?

[earthdog1970]

Yes sorry it was a bit to big to go on but here is a link to youtube as I thought it would be easier to just put it on there.

Yamaha outboard running poorly - YouTube

[A1an]

Have you set the carbs up properly? It sounds like one of the cylinders is suffering from a sneeze, this can point to too lean a mixture.