Dirtbuster1
Well-known member
I pulled my intake and heads today to determine where the oil smoke is coming from. After removing my DS header, the #5 cylinder was black & wet. After removing the head, both rear pistons had a orange ring around the outer perimeter of the piston. I have never seen this before. All of the valves on the DS were black with carbon, but the PS head valves were mostly off white. I am assuming that problems with the CFI could be causing this, but what is up with the orange ring on the pistions.
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