Q My 1977 Suzuki GT750B, is bloody awful on the overrun when it feels as if all the cylinders are fighting each other and the drivetrain snatches and jerks.
We checked the ignition timing and found the back plate advanced to a point where only one securing bolt was in place, the holes for the other two were covered due to the ‘advanced’ position of the back plate.
Also, the air pilot screws on the carbs were wound out 2.5 – 3 turns rather than 3/4 turn as they should be. If we turned the air screws in and set the ignition correctly, then the engine wouldn’t fire.
Is it advanced to help a tired engine? Ray Jeffery, Essex
A Pete O’dell says:
Hunting on the overrun is not unusual. Your issue is timing and from what you describe, the backplate has been positioned to compensate for incorrect fitment of the points gear drive. My hunch is that this isn’t lined up correctly. Sort that and set the timing correctly and your problems with the bike will disappear.
Have you had CCI? You could be owed money