I unfortunately let my 87 300D (140,000 miles) run out of fuel. 2 batteries later it still will not start.

Hours prior to running out of fuel:
I had changed the filters and did a Diesel Purge treatment. (ran great)

After running out of fuel:
Checked the fuel lines and clamps all secured properly (no air sneaking past)
I re-filled the secondary filter with fuel to avoid long bleed time.
Installed a new lift pump
I cracked open the banjos on the fuel filter ran the starter, fuel pumping out properly.
Cracked open the caps on injector fuel lines ran the starter no fuel flowing out.

So I am thinking that either my injection pump has gone south or there is some restriction in the line from the secondary filter to the injection pump.

Perhaps the restrictor bolt banjo fitting on the side of the FI pump where the fuel enters the pump is clogged.

Any suggestions would be appreciated.
Thanks
Mark