P0087 & P1011

[Jet_boat_cruiser]

My truck 2008 6.7 is throwing 2 codes
P0087
P1011
low fuel rail and low lift pump pressure
*
The truck will be going down the road and under* acceleration or passing some one or when I'm pulling a trailer* it will throw these codes and die out.

*I just installed fass fuel system with sump, injectors 30 % , stock fuel filter delete, csp5 switch and adjusted the valves.
And it wasn't doing this before I did this.
*
I already checked my fuel lines and injector tubes thier all tight. And I can't figure out what is wrong. I have done alot of research but there's nothing out there
Thanks in advance* for the help.

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[Polaraco]

You have a tuner with gauges? Need to see what the rail pressure is doing.

Check your batteries and Batt connections.

Is the FASS real loud?

Are you sure those cross over tubes are in right? They are very critical and should have been replaced when you did the injectors. They have to be set to a specific torque
@AccurateDiesel Support our vendors

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[Jet_boat_cruiser]

You have a tuner with gauges? Need to see what the rail pressure is doing.

Check your batteries and Batt connections.

Is the FASS real loud?

Are you sure those cross over tubes are in right? They are very critical and should have been replaced when you did the injectors. They have to be set to a specific torque
@AccurateDiesel Support our vendors

My fuel rail drops like crazy and doesn't come back up. And my Fass isn't very loud and the house from the tank to the fass doesn't feel hard at all. And I checked my cross over tubes and fuel lines and got them to spec but I will pull them out and check them if I need 2

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[Polaraco]

Tim @AccurateDiesel can fix you up. Knows his stuff. He specializes in fuel systems and was the best price.

Better wait for him, but it could be the valve. That's a gray area for me

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[Jet_boat_cruiser]

Tim @AccurateDiesel can fix you up. Knows his stuff. He specializes in fuel systems and was the best price.

Better wait for him, but it could be the valve. That's a gray area for me

What valve

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[AccurateDiesel]

Good Evening!

My #1 concern at this juncture is to connect a mechanical gauge and monitor supply pressure to the CP3. If supply pressure to the CP3 is dropping that would explain everything!

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[Jet_boat_cruiser]

Would I hook that up before the CP3

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[Jet_boat_cruiser]

And is the fass to be loud because I can barely hear it with the truck running

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[AccurateDiesel]

Correct, the fuel pressure gauge needs to be connected before the CP3 - after everything else ideally (filters, etc), but before the CP3.

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[Jet_boat_cruiser]

Correct, the fuel pressure gauge needs to be connected before the CP3 - after everything else ideally (filters, etc), but before the CP3.

Ok sweet I'll try to find a Guage some where. Do they have any good ones at like napa or autozone. Or which one do you recommend

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