2017 international 4300 with a code spn 3936 fmi 2 what I would like to know if that is a major issue that needs to be address. If i read it right it has something to to do with the dpf ( I could be wrong) a lot of black soot in the pipe with occasionally heavy smoke from the exhaust, that way I can cover my butt.
Spn 3936 fmi 2
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by eaglesweeper, Jan 27, 2022.