Birken Vogt
Charter Member
I don't know any specifics on this engine. All I know is generalities.
There should be a catalyst right ahead of the DPF. When the engine wants to regen it pumps raw fuel into the catalyst which combusts and gets the DPF hotter than blazes. Then all the soot is supposed to turn to ash.
But the catalyst can be poisoned by an engine with poor oil control. Also if for injectors or some other reason the engine is blowing soot. Nothing will ever work right. These systems are totally dependent on an engine that runs perfectly clean in the first place. Any smoke or slobber and the whole house of cards comes tumbling down. The great part is that the filter masks what you can see by eye so you are left guessing.
There should be a catalyst right ahead of the DPF. When the engine wants to regen it pumps raw fuel into the catalyst which combusts and gets the DPF hotter than blazes. Then all the soot is supposed to turn to ash.
But the catalyst can be poisoned by an engine with poor oil control. Also if for injectors or some other reason the engine is blowing soot. Nothing will ever work right. These systems are totally dependent on an engine that runs perfectly clean in the first place. Any smoke or slobber and the whole house of cards comes tumbling down. The great part is that the filter masks what you can see by eye so you are left guessing.