This is a 2009 40hp F40LA. I don't think this problem is specific to the model. So this is in MN where we have gas that has ethanol and causes many problems with engines. So this outboard probably sat for a year as is with no winterizing or draining gas. So it did start but ran poorly a month ago when I started to work on it and then finally failed to run unless a shot of starting fluid was sprayed in the intake. Here are steps taken: Drained fuel from tank. Replaced fuel separator filter that is between external fuel tank and outboard. Replace filter in water sensor. This is fuel injected so removed the VST and found it was filled with vanishing from sitting. Removed the VST body assembly and cleaned it out. Removed fuel pump from VST and cleaned it and filter. Same done for fuel pressure regulator. Put everything back together and it started 1 time and then would never fire. If again I sprayed starting fluid in the intake it would fire 1 time and then quit after burning up that. I pulled the injectors and the rail I cleaned the injectors externally and all looked good. I held the fuel rail as someone turned over the engine and there was a fairly good spray of fuel coming out. I reinstalled the rail and still would not start. If I took the rail off and sprayed some starting fluid in each port and replaced the injectors it would start for a brief second and then quit. How can I tell if it is a fuel pump problem or injector? I don't have a fuel gauge and I that is what I may need to get. But from the fuel I see coming out of the injectors during my test I can't understand why I don't see just a hint of it firing. Unless the pressure has to be so great to get inside chamber and that is what is wh. I really appreciate anything you can share regarding this problem. I don't have a trailer so trying to do this myself to save some $$$ as nothing is cheap. Thanks!