What you guys think of this???

STE92

Corporal
Mar 3, 2017
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Was chasing a a misfire on cyl 4 and found this little surprise on cyl 1
FEA371FE-9643-4335-B223-32F69F887A83.jpeg
203880AE-DB41-4131-886C-00CE2CA9040F.jpeg
 
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[email protected]

Lieutenant
Nov 5, 2016
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Valve cover gasket? Sure maybe oil on the threads. A valve cover gasket has no bearing on what gets into the cylinder. With that much oil on the electrode, most likely suspect piston ring seal, or valve stem seals.
 
  • Agree
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fmorelli

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Aug 11, 2017
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E89 Z4 35i, F10 535d
I'm putting a freshened head on my son's 318ti M44 right now that looked like that. Blown head gasket in his case.

Filippo
 

STE92

Corporal
Mar 3, 2017
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Doing dry and wet compresión test next week. Hopefully that help me eliminate know if it’s a bottom end problem and it comes out good then leak test.