Sticking float needle valve- n.o.s carb from the 50's. Will fire up and run fine but if left for a while when the fuel tap is turned on the carb floods and sicks all over the floor.
A car/truck mechanic i am (was) but scooter/bike grease monkey im not Obviously i dont want to go ruining the tip of the needle as there are no replacements but what to clean it with? 2000grit wet and dry, metal polish? Carb has been dismantled and cleaned with carb cleaner.
Any help appreciated- Andy.