Sounds as if it has set for a couple of months?

Check for air in the plastic fuel lines after cranking starter motor for 30 seconds.

Is possible that after sitting some o-rings have dried out.

If bubbles are present will generally come from fuel line, pre-filter or shutoff solenoid o-rings or fuel filter seal ring. Solution is to change out the fuel lines and other o-rings.

A leak from the IP delivery valve seals is also possible. A leak there will generally result in a fuel leak being visible.

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)