Yamaha 2000 F80 4 Stroke Sneeze

[monkeyman41]

Motor was running poorly, sneezing, backfire, missing at idle. Had carbs rebuilt and complete service this week. I tested motor out of water, seems to start and idle better but still sneezes. Motor chokes when I rev it up in neutral. Does is sound lean? Is an adjustment simple? Thanks for your help!

 

[rodbolt]

Re: Yamaha 2000 F80 4 Stroke Sneeze

sounds like you still have some low speed circuits in one of the 4 carbs clogged.
was the work performed by an authorized Yamaha service facility and if so are there tech certifications for at least fuel and 4 stroke systems on the wall?