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when seperating the intake plenum from the lower intake manifold, I discovered a oil buildup of about 1 inch in the crevices that the 2 hidden bolts are, is this normal?
 

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skirfer,

I just separated the intake plenum and found the same thing. Did you ever find out where this oil was coming from?

I expected to find a cracked/melted intake plenum, but didn't see any obvious problems...except that there was oil buildup and the entire top of the intake manifold (under the plenum) was wet from oil.

Thanks,
Nate
 
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