Join Date: Jul 2009
Location: Port Angeles , Washington, USA
91 interstate with 55k on the clock. I have a flat spot off idle that is getting worse. I have seafoamed 2x. It is most pronounced in slow speed turns..roll on the throttle and there is nothing there until about 2.5k rpms then the power comes on and wants to stand the bike up...very unnerving. SO my question is what is most likely the culprit.
1. Vacuum leak
2. carbs out of synch.
3. carbs need rebuild
It is the worst riding 2 up and loaded.
Thanks in advance Jerry