2005 yamaha v-star 650 There is a rubber line that comes from near the fuel shut-off valve, and terminates at a connector attached to one of the cylinders, located behind the air-filter. The end of the hose, where it attached to this connector, is open. No plug, and I do not see any other hose that could have come loose. When the ignition is turned on, fuel begins to stream out of this open-ended hose.

Need a faster answer?
Sounds like the fuel line came loose from fuel injecter, fuel rail. Look for a nipple at pressure regulator valve or fuel rail, if regulator is in tank with fuel pump. Let me knmow how that works out.
Was this answer helpful?
Thank you for your feedback!