Hi again all
After a complete rebuild my '79 D runs great when cold and also runs great when warm. My problem is when i rev the engine above 4500rpm it seems to stay there. I can rev anywhere up to that and the bike will return to idle (1450rpm ish) and it will rev right to max but will then return to 4500rpm.Stop the engine, restart and idle will be normal again.
I am confident that carbs are clean and fitted with 'repair kits' and bench balanced, mixture set to 3 1/2 turns. Timing is good as is petcock and vacuum pipes. Petrol (gas) is new and good.I have had throttle cable off (new cable), oiled and fitted 'loose' without effect
As said, bike runs and drives great, nice and smooth but seems to want to run at high revs when warm.
I have messed with carbs settings when the motor is running and managed to draw idle down to 3500rpm but that seems to be the best i can get.
All suggestions gratefully accepted
After a complete rebuild my '79 D runs great when cold and also runs great when warm. My problem is when i rev the engine above 4500rpm it seems to stay there. I can rev anywhere up to that and the bike will return to idle (1450rpm ish) and it will rev right to max but will then return to 4500rpm.Stop the engine, restart and idle will be normal again.
I am confident that carbs are clean and fitted with 'repair kits' and bench balanced, mixture set to 3 1/2 turns. Timing is good as is petcock and vacuum pipes. Petrol (gas) is new and good.I have had throttle cable off (new cable), oiled and fitted 'loose' without effect
As said, bike runs and drives great, nice and smooth but seems to want to run at high revs when warm.
I have messed with carbs settings when the motor is running and managed to draw idle down to 3500rpm but that seems to be the best i can get.
All suggestions gratefully accepted