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| E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm Total Produced: 45,000+ - Years Produced: 2001 to 2006. |
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Mon, Dec-20-2010, 07:20:44 AM
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#1 |
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Registered User
Join Date: Oct 2009
Age: 21
Posts: 660
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 Location: Austin
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Noticed some black stuff in engine while doing valve adjustment....
Hey guys I was happily performing a valve adjustment when I noticed the following..... I tried to clean the first spot I found this between cyl 1 and 2 but its at every other location as well.
     Should I be concerned? Should I clean it off? Is this normal?
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Mon, Dec-20-2010, 05:56:52 PM
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#2 |
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Moderator
Join Date: Dec 2004
Posts: 13,310
Reputation: 578
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Re: Noticed some black stuff in engine while doing valve adjustment....
I think you need to circle what you're concerned about. It may be clear as mud to you - but not to the rest of the world..
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Don Eilenberger AKA bellymeisterburgermeister and denilegiiiiiiiiiiiiibennnnegerieragher (but that's misspelled..)
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Mon, Dec-20-2010, 06:09:05 PM
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#3 |
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Registered User
Join Date: Aug 2009
Posts: 602
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Location: Toronto
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Re: Noticed some black stuff in engine while doing valve adjustment....
I think I see what he's talking about...the black sludge around the holes. Right?
I don't know if that's "normal" or not on an S54 but I've only seen that in older engines that were left too long without an oil change. In the case of an S54 this could be from using the wrong oil, or not using an OEM filter and/or leaving it too long. |
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Mon, Dec-20-2010, 06:09:22 PM
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#4 |
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Registered User
Join Date: Dec 2007
Posts: 5,036
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Location: DFW
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Re: Noticed some black stuff in engine while doing valve adjustment....
I think he is talking about the outer black ring of gunk where the shim slot is.
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Mon, Dec-20-2010, 06:12:27 PM
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#5 |
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Registered User
Join Date: Aug 2006
Posts: 4,735
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Location: Los Angeles
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Re: Noticed some black stuff in engine while doing valve adjustment....
TY. For the first time I have no idea what I'm looking at.
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Mon, Dec-20-2010, 06:52:04 PM
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#6 |
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Unregistered User
Join Date: Jun 2006
Posts: 829
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Location: Vancouver, BC
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Re: Noticed some black stuff in engine while doing valve adjustment....
oil turns black due to carbon... by-product of combustion. not every single drop of oil is drained during oil changes.... so overtime the head will look like the pics above.
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 2002 BMW M3 |
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Mon, Dec-20-2010, 08:11:05 PM
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#7 |
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Registered User
Join Date: Oct 2009
Age: 21
Posts: 660
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Location: Austin
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Yes it is the black gunk around the holes in the top center of the pics. I cleaned it off best I could to see if it reappears later.
Sent from my PC36100 using Tapatalk
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