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DubTee

(Yesterday )Rawze Wrote: looks to me like you missed something EXTREMELY IMPORTANT duting your adventure there....

The 559 fuel-code fault that is often also related to a very well known flaw of the ISX's ...

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NEXT:... ASSUME THE DELETE IS...5

Also...
Is the VGT turbo still on it?
Is there a proper block plate between the Exhaust manifold and EGR cooler at cylinder #1?. .. at the intake piping as well?..

Are the cans fully gutted?.. including the SCR??>.. which many ppl do not do properly?.

Has the main harness for the AFT systems going down to the cans unplugged?.. -- IF SO, the is there still 60-ophms on the J1939 network, because of some dumbersse unplugging too much stuffs?.
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A lot of unknowns that, as a truck owner,.. you need to know the answers too if you want things to be right and not harmful/destructive long term.

Ok so I misunderstood. I knew the importance of checking the pump head but the fact that I was able to solve the rail leak problem doesn’t mean the pump is clear of any faults I did not know. I will check this before I start the engine again. As of now no faults and the pressure decay is within spec. Measured and commanded values are consistent. I am 100% certain the ecm file is incorrect and will be corrected as soon as possible. I will get the file over to you soon. The “ghost code” is an oversight on my part. And the fact that I have no idea the history of the guts I will have to replace to be sure anyway. I idle maybe 2-3 hours worth a day plus I run the pto at 1000 rpm’s sometimes 3x a day sometimes 3x in 2 weeks. About 45 mins run time. I will go off of the 8000 hrs interval for replacements. Truck says 8000 hours with 734k miles which I’m assuming is ecm hours not engine hours. Either way, I will email file and inspect pump and repair. Vg turbo is intact and exhaust runs directly from down pipe to stacks. I need to familiarize myself with egr locations to check for block off plates and the plug you are referring to (should or should not be connected?)