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 ?
Px8 fuel problem
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Racinemobile, Jan 17, 2022.
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