2010 px8 loosing rail pressure after hard acceleration. 559 code
Checked for prv and was dumping a lot of fuel, replaced. Same thing
One plunger was stuck in hpfp still no luck
Lift pump supply at hpfp is good,
But once rail pressure is lost notice fuel/water sep 1/2 full every time, can’t seem to find any cracks/loose lines
Excess return? Injector/tube leaking?
Is there a screen inline of these fuel systems that could be blocked up ?