Hi Im new here and im not sure if im posting this in the rite place but heres my problem. If have a 94 cbr 600, when I get up to speeds of like 85 thats as fast as I can go In 5th gear, and It will be full throtle but thats a fast as it goes and then it starts puttering like its out of gas. THen sometime it will go faster then slow down, then go faster, then slow down. Also I can reach speeds higher than 85mph if I stay in 3rd or 4th gear but soon as I shift to 5th gear it starts to slow/bogg down but if I down shift I can go faster, I have full power. So to sum it up in 5th gear I can go full throtle but no acceleration.... Please help Thanks

 

That shouldn't be happening. Sounds like dirty carbs giving funky fuel delivery.