1985 FXR, bored,stroked,balanced makuni carb,bassani exhust. about 45k miles about 25k after rebuild. bike starts to brake up at about 5k rpm. new ignition, new coils, new plug wires-- tach. disconnected, head lights, dis. horn. run switch, different battery to test run with. WTF.

 

Not enough gas to the carb maybe?

 

Remove your hand from the right lever...

 

If everything was fine until recently, what other work have you done, if any? If none, suspect junk in the gas tank and carb. So drain, clean and flush the tank, remove the carb and clean the float bowl. If the carb is 25k miles old treat it to a rebuild kit, which will replace any perishable parts. Inspect and clean all the jets.

 

Inline fuel filter? Get rid of it.