Medium and Heavy Trucks
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god afternoon my name is ***** ***** I will assist
what year, make, model, engine do you have???
ok, thanks. you have a failed o ring on 1 of the injectors. when this happens, it forces fuel back down and into the devco and fills it up and spills over. common issue with failed o rings. I suggest removing all injectors and inspect all o rings.
how are you making out????