My neighbor ran my old L-2250 all winter long clearing his driveway. The other morning it would not start. It did sputter and try to start a few times. But now nothing. The only thing that was done before this happened was the fuel was topped off. It's cold in Central Maine. No conditioner was ever added to the fuel. I suspect a gell problem. Can I clear this out by bleeding the injectors like I see in the video? Any thoughts on this? TIA