What is this inside my valve cover? (Soot / Crud Rock?)
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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 |
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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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. :eek: !!!!!!
Mike |
not plastic
if I pinch it it will crumble, that is why I was thinking egr slag / soot
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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 |
yes - pretty regularly
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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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middle section
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middle area
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front
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near chain
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whole engine shot
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one side
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flash makes a bit more shiny...
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than it really is
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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 |
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