Ok, so when turned off the LPG and sprayed starting fluid into the air box while cranking and pumping the gas pedal it will start.

I don't know how the LPG coming out of the injector is supposed to look like but it does not smell nearly as strong as the LPG that comes out of the inlet pipe from the vaporizer and that has a white misty appearance to it. I'm not sure if that sensor to the right of the injector is the problem. I cleaned out the injector housing with brake cleaner and still the same problem. The sensor that I'm talking about is called the LPG assistor that has a plunger with a spring in it.