Replaced HPFP and lift pump. No dice. Thinking it is air in the line. Going to try to bleed the air out Ill update when I get any results. It sucks to read posting without results. Ill be sure to follow up.

 

Replaced the HPFP and lift pump. Then bled 1/4 of tank of fuel getting the air bubbles out. Still no pressure building up. Checked the oil and there's fuel in the oil. So there is a failure somewhere in the fuel rail. When truck first failed to
start I was starting and immediately it threw the code. Made a popping noise. I'm going to pull the valve cover. Any input much appreciated.

 

Help me out here . . . When a P2291 has been stored, it means that the powertrain control module (PCM) has detected an insufficient degree of oil pressure needed to control the high-pressure fuel injection system, with the engine cranking. ... The PCM monitors high-pressure injection using one or more fuel pressure sensors.

Why are you replacing / messing with the fuel pump? Have you tested the pressure on the high pressure oil side?

Are you sure there is fuel in the oil? If so, it seems an O-ring on an injector is gone.

 

UPDATE... Pulled the passenger side valve cover diesel is just leaking in to the engine via the high pressure pump. When I turn the key KOEO diesel is pouring out, Can't see where the leak is coming one of the back two injectors. Going to work on it more tomorrow

 

I have the same issue. Any idea whats wrong? P2291 no start, and l hear bubble in the fuel system. The car sat for few days and then it didnt start. Any hint what is the issue? I checked the fuel line after the fuel filter and the fuel has pressure there so I feel the issue is somewhere after that (under hood). Any hint?

 

To your question JAX the low pressure fuel pump wasn't getting up to the 8 PSI it wasn't building any pressure at all

 

Thank you.