It would be helpful if you explained what lead you to change lines and injectors as there may be a clue in the problem you are now having.
I know you stated you are following the bleeding procedures but I would like to compare what you are doing with the steps in the Owners' Manual:
There is a mechanical fuel pump located on the side of the fuel injection pump.
Step one as shown below is to have gravity move fuel from the tank and out the TWO bleeder screws on the filter assembly.
This step is just with a stationary engine and if this step cannot be done successfully there is no point in going further and the cause needs to be fully investigated.
The next step checks out the delivery of fuel by the mechanical pump into the injection pump. You have the engine fuel control pulled
OFF to stop fuel delivery beyond the mechanical pump delivering fuel into the injection pump. You open the air vent plug on the injection pump.
In this step you are trying to get the injection pump to deliver fuel to the injectors.
When there is no air coming out the vent plug with the throttle wide open, the engine may start.
If engine does not start, bleeding at the individual injectors may be necessary. Do this bleeding at the injector not at the injection pump.
I found doing one cylinder at a time works best for me.... others may have different experiences.
You cannot skip steps especially if the system has been open and lots of air admitted.
Dave
