Ritchie

Black Soot build up under engine area

12 posts in this topic

I've attached a few images of the underside of this motor. I can see a little oil leak around the drive shaft but where is all this soot coming from?

soot2.png

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Reminds me of the problem I had with the toner on my laser printer. (not fusing properly to the paper) Did you solve the P0238 problem you mentioned you had? Could be stuck waste gate.

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I guess stuck open EGR valve and leak in inlet duct somewhere. 

 

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8 hours ago, tolsen said:

I guess stuck open EGR valve and

Quote

 

"leak in inlet duct somewhere".

 

Just to be sure that were understanding your explanation on this one ... the air filter compartment is connected to the inlet duct which is connected to the turbo inlet.... that being the case, how can soot expelling from the engine exhaust be creating this kind of build ?

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I guess exhaust fumes will be rather black and sooty too. 

EGR gas is hot and could melt rubber and plastic parts in inlet duct. 

What I mean by inlet duct is anything from air inlet at side to and including inlet manifold. 

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Can also not rule out EGR pipe and EGR cooler. Could be a leaking joint or crack. 

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mine is close to looking like that...it was nice and clean during my fall oil change but today looks awful

 

i was under there to see why my exhaust sounded so loud recently and it appears the bottom seam is coming apart on the muffler and causing quite a bit of soot buildup like yours (i just wrapped a large stainless hoseclamp around it to hold it until spring weather comes)

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Exhaust on my 450 is original from 2002, only 16 years old. I cut off bottom seam and TIG welded it full length when I first noticed seam was splitting. 

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im going to have to try a repair when its warmer (currently -20's)

 

dont have a tig though just a few mig welders and lots of patience

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