Smart!! Anytime you touch te fuel rail ALWAYS prime the system and look for leaks BEFORE you bump the starter.
My stepson almost burned down half of the Colorado mountains this way
Fuel rail leaking on engine swap, bumped starter = Ranger caught fire, on driveway, in the forest during drought /fire season. I was less then happy. However I did grab and extinguisher and put the flames out quickly. He was left with a melted engine harness and more repairs.
A cylinder full of fuel will cause LOTS of white smoke out of the back
DO NOT USE CHEAP INJECTORS and when I say cheap I do not mean price, the crappy auto parts store replacement injectors are not worth the box they come in. Stick with Bosch. You can get a nice set of rebuilt and flow matched injectors all over the internet for under $100 for a SOHC
Make sure you get the new rubber /black plastic injector cups that sit in your intake, those things like to crack.
When seating a fuel rail and new injectors CLEAN out all the cups engine side and fuel rail side.
Use vaseline to lube the new O rings, press each injectors into the manifold, then lay the fuel rail on top, align the tops and press down firmly. Now add the bolts
That's all there is to it, I just did this twice yesterday
No vaseiline = you will rip an O ring and create leaks