A Sooty Intake (repost from old forum) ...

[Rawze]

There has been recent arguments against the possibility of soot getting into Air Compressors from the Intake, because some MORON mechanics think that just because the EGR is PAST the air compressor circuit, that it is not possible. I guess the ignorant fools think that positive pressure from the turbo would prevent such things,.. but it is a clear lack of understanding on how charge air systems actually work. Because of this, I thought I would share this again,....

I have seen some engines so bad, that I have seen black soot puff out of the Air cleaners backwards through the engine during "turbo coughing" when the engine is shut down. i have also seen CAC Units soot-packed before because of problems like this. -- it is actually NOT THAT UNUSUAL to get soot into the air supply systems on these trucks...


- This is the result of a failing EGR Valve, creating excess turbo lag... The EGR valve was stuck wide open, and it wasn't even throwing any codes. The guys turbo eventually failed, and we decided to check out the whole system and found this. There is no telling how long this was going on inside his motor, or how much excess wear and soot is not embedded into the air system and air tanks. The the entire air system has signs of soot running through because it was so bad. --- Here is a pic,... You can tell it was happening for a while.



The Ceremic in his DPF was completely melted as well,... Here is a chunk that fell out of the back side when we took it off to inspect it. These things are made of ceremac, so how hot do you think it had to be before it melted it? --- Sad indeed!



He had just left a dealership in Virginia and brought it over here because of power loss issues. They told him his DPF was fine, and that it was normal to have turbo lag --- No codes in the Computer = a good truck,... That is what they told him!

We got him all sorted out hopefully, and maybe his fuel mileage will go up as well.

- I thought I would share these pics for others to see... Rawze