Re: virago only fires on one cylinder
I found that the front carb was my problem. Sometimes the bike would fire and sometimes I really had to crank the throttle to get the front cylinder to "catch". Couldn't find an electrical problem so I rebuilt the carb. No change. Then the second time around I found that the vent hole in the side of the float bowl had been almost toally plugged with some white cruddy gas residue.
Cleaned it out with solvent and a torch tip cleaner and now she runs like a house on fire! Just in time for spring riding too.
Good luck,
George