Running rich choking off at idle runs real rough when cold runs great in hot weather or after running for 1/2 hr
SOURCE: my 2006 yamaha v star 650 will run with choke on
You have a vacumm hose loose look for small hose no connecter to anything - should solve it - I had a similar problem with a ZX9r the other day - same would run fine on choke not idle or start without it
Good Luck
Del
SOURCE: Stalling
does it have a fuel pump? It could be going bad.. if not, it could be a bad battery...but since it looks like a 2008 its doubtful and could be just loose or dirty connections in the battery circuit.
SOURCE: 2004 V-star 650 won't idle
Sounds like the fuel filter is pluged or you got crud in the carbs and they will need took apart and cleaned.
SOURCE: DOES NOT WANT TO START GOOD, BUT RUNS FINE. HOT
If the problem is only in cold weather, the mixture it is lean. If the carb adjustment didnt help, it may need a bigger idle jet.
If every thing else is ok like valve clearances , it should start with a couple of kicks.
make sure the choke works, and the air cleaner is serviced and oiled. If the bike sits for any lenght of time between rides, drain the carburator before the first kick.
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