My car stalled and died a few weeks ago, trying to get it to restart. Replaced cracked injector return lines, and manual primer pump. Trying to rule out air intrusion issues. I have fuel at the banjo bolt, and fuel going into the IP. Tried removing the vacuum line on the back of the IP. The vacuum controlled shutoff valve should be in the horizontal position when cranking / running is that right ?

After opening the injector hard lines a half-turn, and a large amount of cranking, I'm only seeing fuel at injector #4, nothing at 1-3. How likely is it that I have a bad IP ? Thanks

 

Pump the primer many many many times until you hear buzzing from the relief valve on the side of the injection pump.