I have a 1996 Speedster and one engine won't consistently rev up all the way. It bounces between 4k and 7k. If I just go straight (turning causes it to lose rpm's) and am patient, it seems to stay at 7k more often (80% of the time). I KNOW it is a carb issue because I switched carbs between engines (and nothing else) and the exact problem followed. I have replaced fuel lines, rebuilt carbs twice (once quickly, once very very very carefully), and nothing changes. The problem started two years ago, but only occasionally at first. Now it is consistent.
I don't know what else to even check on the carbs. The pop-off is good, all the adjustments are correct, and I was very careful to follow the Mikuni guidelines.
Help...
I don't know what else to even check on the carbs. The pop-off is good, all the adjustments are correct, and I was very careful to follow the Mikuni guidelines.
Help...