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  #1  
Old 10-25-2003, 07:45 PM
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What is this inside my valve cover? (Soot / Crud Rock?)

With the valve cover off I discovered and removed these two oil sand rock looking things from the intake side of the engine near the two rear valves, kinda sitting in the little indentations. There are about the size of an acorn.... EGR slag? What the hell. I only found the two....

engine has 183K
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What is this inside my valve cover? (Soot / Crud Rock?)-soot-crud.jpg  
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As of 2/2010:
2001 CLK55 0o\=*=/o0
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1984 300SD
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  #2  
Old 10-25-2003, 10:00 PM
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Could it be a fossilized paper liner from an oil bottle??? That's what we found, though ours was not 'as' fossilized as that. :p
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  #3  
Old 10-26-2003, 12:10 AM
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It's not plastic, is it? I don't mean to panic you, but if it is plastic, it could be pieces of timing chain guide/tensioner. !!!!!!

Mike
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  #4  
Old 10-26-2003, 08:17 AM
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not plastic

if I pinch it it will crumble, that is why I was thinking egr slag / soot
__________________
~shell
As of 2/2010:
2001 CLK55 0o\=*=/o0
13.6 @ 106mph
10K mi
1984 300SD
260K mi and going and going...
97 S600
46K miles
1991 Sentra SE-R (extremely dorked with)
www.se-r.net
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  #5  
Old 10-26-2003, 09:22 AM
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Did the PO EVER change the oil? Looks like hard sludge to me, the stuff you get from leaving cheapo dino oil in there forever.

Peter
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1972 220D ?? miles
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1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
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  #6  
Old 10-26-2003, 09:28 AM
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yes - pretty regularly

what is weird is that there was no sludge anywhere else around the valve train - just that one area - this is what the rest of the valve train looks like.... this shot is pretty much where I found the pellets
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What is this inside my valve cover? (Soot / Crud Rock?)-rear-valve.jpg  
__________________
~shell
As of 2/2010:
2001 CLK55 0o\=*=/o0
13.6 @ 106mph
10K mi
1984 300SD
260K mi and going and going...
97 S600
46K miles
1991 Sentra SE-R (extremely dorked with)
www.se-r.net
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  #7  
Old 10-26-2003, 09:31 AM
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middle section

middle area
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What is this inside my valve cover? (Soot / Crud Rock?)-middle-valve.jpg  
__________________
~shell
As of 2/2010:
2001 CLK55 0o\=*=/o0
13.6 @ 106mph
10K mi
1984 300SD
260K mi and going and going...
97 S600
46K miles
1991 Sentra SE-R (extremely dorked with)
www.se-r.net
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  #8  
Old 10-26-2003, 09:32 AM
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front

near chain
Attached Thumbnails
What is this inside my valve cover? (Soot / Crud Rock?)-front-valve.jpg  
__________________
~shell
As of 2/2010:
2001 CLK55 0o\=*=/o0
13.6 @ 106mph
10K mi
1984 300SD
260K mi and going and going...
97 S600
46K miles
1991 Sentra SE-R (extremely dorked with)
www.se-r.net
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  #9  
Old 10-26-2003, 09:35 AM
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Posts: 802
whole engine shot

one side
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What is this inside my valve cover? (Soot / Crud Rock?)-whole-engine-3.jpg  
__________________
~shell
As of 2/2010:
2001 CLK55 0o\=*=/o0
13.6 @ 106mph
10K mi
1984 300SD
260K mi and going and going...
97 S600
46K miles
1991 Sentra SE-R (extremely dorked with)
www.se-r.net
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  #10  
Old 10-26-2003, 09:35 AM
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Join Date: Nov 2002
Location: Dallas
Posts: 802
flash makes a bit more shiny...

than it really is
Attached Thumbnails
What is this inside my valve cover? (Soot / Crud Rock?)-whole-engine.jpg  
__________________
~shell
As of 2/2010:
2001 CLK55 0o\=*=/o0
13.6 @ 106mph
10K mi
1984 300SD
260K mi and going and going...
97 S600
46K miles
1991 Sentra SE-R (extremely dorked with)
www.se-r.net
Reply With Quote
  #11  
Old 10-26-2003, 12:59 PM
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Join Date: Aug 2001
Location: Evansville, Indiana
Posts: 8,150
It will collect where the oil flow is the slowest, meaning the rear of the head. Probably a bit hotter back there as well.

I see lots of black sludge on the casting -- can you wipe up some black grittys stuff of the depressions in the head where the casting is rough? If so, hard sludge.

Run several changes of good oil with filter on short oil changes, this should all come out, it's not good for the oil pump. I'd wait to switch to synthetic, if you are planning that, until you get the engine cleaned up a bit first!

Peter
__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
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