I have an '03 with just over 26k miles on it and it has been serviced on schedule. My problem is that when riding with the throttle at a set position (maintenance throttle) it starts to act like it's not getting enough fuel and stuttering. Mainly noticeable at lower speeds. When in 2nd doing 30mph it's gone as low as 23mph before I twitched the throttle and got back to speed. I've tried some fuel treatment to no avail. I'll be trying Seafoam which has been recommended. Any ideas what's causing this or am i stuck going through a whole list of possibilities till I narrow it down? Besides dirty injectors what else should i check? Thank you very much for any help.
