I have a 05 yamaha 1100 vstar. Low Fuel light comes on when I start the bike. But never comes on when bike is running. Why ???

if the bike is fuel injected- the pump is in the fuel tank.. if the bike has carburetors- there is normally no fuel pump- the fuel gravity feeds from the tank thru the petcock valve into the carbs

yes

sounds like a problem i had with my v star if u can charge it and it starts and runs for a bit then dies again check the rectifier which charges the bike

Turn off fuel petcock before you shut down bike. Let idle for a couple minutes. When you restart leave fuel petcock off until it fires. This works for me when its really hot outside. 2007 VSTAR 1100 classic.

If you set your fuel petcock to "on" the bike will sputter when its low and you can switch over to reserve that has about another 1/2 gallon. I just set my trip meter and get gas about every 175 miles to be safe. 2007 VSTAR 1100 Classic.

Take the bike to the shop to diagnose, more than likely it is a Throttle Position Sensor. It could also be a blocked fuel filter starving the engine. Only the mechanic can obtain the codes and point you in the irght direction.

Could be the coil. Also could be several other things. Download a shop manual and diagnose it.

Sounds like you are not getting fire to that cylinder,check plug wire,plug,and the cap on the end of the plug wire.

If all is well with those,just let me know and we can go to the next possible cause.