This happened to me when I did the same procedure last year, along with checking the valves while I was in there. If my memory serves me correct, but I have a terrible memory, I traced it down to having to do with my PC V. Do you happen to have one? I wish I could remember better, but I think I ended up bypassing it by connecting that big plug back to the way it was stock. It then fired up. I then hooked it back up with the PC V and it worked. So I may have not had a good connection when I put everything back together. Maybe you can disconnect that and give it a shot?