In regard to your question about bleedng the fuel rail, the answer is yes. If you have had the rail opened up such that the fuel has been drained out then the fuel system will have to be bled. I'm basing this on previous experience with my SOHC. I had the fuel rail off and the injectors out to have them reconditioned. I got the injectors back and put it back together. When I turned on the ignition I could hear the fuel pump power up but when I cranked the engine it didn't fire. I cranked it several times and still no fire. At this point I quit in disgust and went looking for a cold beer. The next day I tried cranking it again. After about the third crank the engine tried to fire. On the next attempt the engine finally caught. The engine was running rough but it was running. After a few seconds I could tell the engine was starting to smooth out. At this point it dawned on me that the fuel rail had been full of air. It was not until I had cranked the engine enough to get sufficient fuel in the cylinders that it would fire. The engine has run fine since. Some fuel rails have a bleeder valve on them. The SOHC rail doesn't but your engine might.