misfire..bad gas..carb issue???
I started to notice a miss in my accel around 4500-5500rpm. It started the next day after a fill-up. I have since added about 1/2 can of seafoam. It was not as bad today. There were a few lags, but not like that first time. I was almost on E when I got gas and the station was about 5-6 miles from my house. The next morning as I warmed it up for an oil change(the first on my own BTW) it would lag on accel. It was the worse on that first ride around town and its gotten progressively better since Wednesday morning. It was also OK above 6K. I would never notice anything on slow accel, just on a more open throttle. I'm not sure if it was doing it on a steady load on the interstate at that speed. It would seem like there was some kind of change in the engine sound, but I'm not sure if that was me not completely steady on the throttle of not. I had my extreme lean mix issue and believe that is cured as the mix screws are 3 full turns out.
Looking for some ideas to check out
2001 VN750...old ride
2003 VN1600.. new ride