I would trace your throttle cable back to the engine. You may have pushed it to far and it loosened and slipped causing the fuel to close. It may just need a bolt tightened up. If your cable is loose as you apply throttle to start the handle moves but does not move the fuel control.
To bleed the system loosen the nut where the fuel supply connects to the injector is. Turn the motor over till fuel comes out. re tighten and clean up the mess.
To bleed the system loosen the nut where the fuel supply connects to the injector is. Turn the motor over till fuel comes out. re tighten and clean up the mess.