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"resident smarty pants"
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5,507 Posts
If you want help on a 6.0L forum you need ForScan ($6 download and the adapter can be had as low as $35). Easy to learn. Folks here are pretty good at figuring things out when they have data.

Otherwise, wait for folks that like to guess.

Problems like you have going on can be caused by any one of a half dozen (or more) reasons. Could be electrical, could be in the high pressure oil system, could be fuel pressure or supply, etc.
 

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"resident smarty pants"
Joined
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5,507 Posts
ForScan Lite to a smartphone is $6.
The adapter can be as low as $40 or you can spend a WHOPPING $140 for the high end adapter. With a smartphone option you need to consider which platform when choosing an adapter (iOs or Android). I have found that the cheaper BAFX adpter work ok, but will say up front, if you run into issues, ForScan has dropped ELM32 support. I haven't experienced any problems.

ForScan Full Version on a Windows laptop is free. The OBD-USB connector is about $60

Both are ALL you need to troubleshoot a Ford Diesel. You do not need a $12k scan tool - period. We are trying to help, we do this a LOT.

You most likely have a leak in the high pressure oil system.

We need to see data on a hot engine.

KOEO:
ICP pressure, psi
ICP sensor voltage
IPR% duty cycle
MAP pressure, psia
EBP pressure, psia
Baro pressure, psia

Cranking:
cranking rpms
ICP pressure, psi
ICP sensor voltage
IPR% duty cycle
Cam/crank Sync
FICM Sync
Fuel (Injector) pulse width
FICM MPower
FICM LPower
FICM VPower
V-reference voltage

If you don't want to gather and post data, then start learning about air testing the high pressure oil system and be prepared to replace some injectors.

Fuel pressure is also VERY important, but Ford did not give us a sensor OR a gauge. They have to be add-on and some can get expensive.
 
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