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
Never heard of a loose injector causing this kind of problem but it almost makes sense. You would assume the carbon is entering the tank through the fuel return line and possibly some blow-by at the injector could cause such a thing. Keep us posted as to what you eventually find.
Have you considered installing a fuel filter on the fuel return line?
Have you considered installing a fuel filter on the fuel return line?
