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Here's what I've done:
I checked power coming to the injectors and I believe that one is consistantly dumping fuel (cyl 1). Cyl 2 though I don't know why is throwing that code.
I know these 6.0L's tend to have a problem with their EGR's sticking, and I'm wondering if 3 of the 5 codes are unrelated to the injectors sticking and are another problem that he just didn't think was that big of a deal when he brought it to me (I'm considering buying this truck from him, but don't want to inherit a major problem, obviously. I have a 7.3 which I prefer, but this truck is newer with MUCH lower miles).
So, like I was wondering, I'd like to get him up and running, and clear the codes and see if they re-occur or if they're ghost codes aggrevated by the cylinder issues. But, the brick isn't telling me much, and I'm still getting used to the pegisys. It's not listing any suggested tests or procedures for troubleshooting on this particular problem.
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