- Apr 2, 2008
I am fairly new to Nortons and have a '73 Interstate with a single 34mm Makuni. My idle is erratic over a range of about 600 or 700 rpm. I have cleaned the carb well so next suspected the linkage that takes a tight bend just after leaving the carb but then I read a comment that Boyer ignition would stop the erratic idle in Nortons. What could be causing erratic idle?