Loose Injector
Has any one heard of the Cummins 8.3 ISC having a loose injector causing combustion products to enter the return fuel going back to the main tank and causing the fuel to turn black, then clogging filt...
Forum Discussion
After looking at this thread a second time, I see that "under the microscope there is a hard particle"?
That would mean to me that there is hot exhaust getting into the fuel system under high pressure. I would suspect a cracked head. Somehow the fuel is getting burned to create a hard particle.
Maybe a compression check would verify it? Maybe not. Is there a fuel passage way in the head?
If the filter changes/mileage remains the same, then I would just change them every so often and keep on driving.
JMHO
That would mean to me that there is hot exhaust getting into the fuel system under high pressure. I would suspect a cracked head. Somehow the fuel is getting burned to create a hard particle.
Maybe a compression check would verify it? Maybe not. Is there a fuel passage way in the head?
If the filter changes/mileage remains the same, then I would just change them every so often and keep on driving.
JMHO
