Peugeot Boxer 2003 2.2 HDi Limp Mode & Long Start

Hey,

My personal Van is having difficulties, 2003 Boxer 2.2 HDi (4HY Engine)
- Autocom Fault code "Pressure Regulator".
- Abnormally long Cranking.
- Limp mode if hit "Torque" RPM'S (Engine might even die).

I have changed new rail pressure regulator, no help.
Did over-leak test on injectors, 2 was high, replaced them with salvaged ones, no help. Leakage is now OK.
Rail pressure while Cranking OK.

I'm thinking maybe i have two different faults.
Maybe EGR leak? Could the pressure regulator mean the charging pressure
solenoid valve?
I would not like to play Parts Darts too much anymore.

I could not find from Autocom repair values for injector's.
Seems this engine is badly supported...

Thanks in advance!