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Old 11-27-2015, 11:47 AM   #1
Sonnysib
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Join Date: Aug 2015
Location: Fort Knox KY
Posts: 3
Milky Oil

Good morning everyone. I have searched and couldn't find answer so I'm posting new thread. I am not a serious mechanic and learning one project at a time. So forgive the dumb question.
But I had a leak and wanted to change my valve cover gaskets yesterday on my 69 C10 SB. Standard 350 engine and 4 barrel carb. . After opening one I changed and moved on no issue, the 2nd had a milky substance all over one side underneath the valve cover. I cleaned out replaced gasket and put back in. What is the substance? I have seen different answers everywhere I look online. Also. Now my truck is blowing black smoke out and barely idling at all. I didn't mess with anything else yesterday either. Do I have a bad head gasket? Any info is appreciated. Thanks all!
Sonny
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