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Discussion Starter #1
this truck was running fine then quit on the road. pushed it back, found ICP 50 psi, bled air from system ICP came to 450 psi, low pressure pump is at 6 psi. new fuel filters, installed new HPFP, and harness, and new lines to the fuel rails. Bled the air from the system and no start the ICP is 1000 psi. the injector and HPFP adaptive codes reset. made up a fitting for bleeding air off the fuel cooler still no start! Thinking pressure loss at one of the injectors. What am I missing? Any suggestions would be great. Thanks
 

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Did you check the fuel system button on the pass side?

What is your HP fuel rail pressure when cranking?

How look the fuel bowl on top of the engine?

Where did you get your 6psi reading on low side?


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Discussion Starter #3
Did you check the fuel system button on the pass side?

What is your HP fuel rail pressure when cranking?

How look the fuel bowl on top of the engine?

Where did you get your 6psi reading on low side?


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Button on passenger side not tripped.
Fuel rail pressure 900-1150 psi.
Fuel filter housing inside clean, no metal.
Low pressure fuel pump 6 psi came from fuel cooler shredder valve.

I'm still getting small amounts of air at the fuel cooler.
 

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LPFP and HPFP pressure are too low.

Keep bleeding your Low side for a bit than jump to the high side. When you see no more bubbles on the high side, keep bleeding for another good 10 min.

You need to reach a min of 4500-5000 psi on high side tho get the injectors to fires


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Pull the dipstick. If the level is grossly overfull, stop cranking the engine! Pull the valve covers and look for a leak at an injector or line.
 
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