Just did an oil change and found this - BMW Forum - BimmerWerkz.com
3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

 
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#1 (permalink) Old 06-06-2008, 01:02 AM
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Just did an oil change and found this

Im hoping that someone can assist me in determining exactly what (bearing ?) this is.

The pieces were found on the little magnet in the oil pan plug when i took it out to drain my oil.







Any help would be great.
1991 318is
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#2 (permalink) Old 06-06-2008, 09:48 AM
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looks like it could be valve guides to me, did you do a compression test?

Good Luck!
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#3 (permalink) Old 06-06-2008, 10:44 AM
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Valve stem locks is what they look like to me.

MY suggestion: open the valve covers and turn crankshaft manually. Observe if all the valves move the way they should. If not, there's your problem.

* I wouldn't suggest compression test until after u are sure valves are ok. Things being the way they are, a loose valve just might punch a hole in ur piston if u do compression check.

Let us know...
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#4 (permalink) Old 06-06-2008, 11:20 AM
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Quote:
Originally Posted by Landscape View Post
looks like it could be valve guides to me, did you do a compression test?

Good Luck!
Landscape could be correct also. Broken pieces from a valve stem would resemble what you have in pics.
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#5 (permalink) Old 06-06-2008, 12:20 PM
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Well, I just went through AirCare and my numbers were actually lower than last year. So I can pretty much safely assume that my compression is ok.

Im going to pull the oil pan and valve cover just to be safe.

1999 M3
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