Abstract: A fuel injection system for a combustion engine having an injection valve with a fuel vaporizer into whose inlet orifice fuel can be injected from the injection valve and out of whose outlet orifice a fuel stream is discharged, and having an air supply system that supplies air to the fuel vaporizer for mixing with the fuel stream. To improve the fuel delivery from the fuel vaporizer, the air supply system has an air blow-out device mounted in the area of the outlet orifice of the fuel vaporizer through which the air to be added to the fuel stream is supplied to the fuel stream discharged from the fuel vaporizer.