12.7 series 60 head gasket oil leak

I would be inclined to say it is not likely an air compressor failure. The intake manifold normally has positive boost pressure in it. I would think you would be more likely to see oil in the air system from a failing compressor.

 

Is the oil top and bottom of manifold? I would still be thinking it has ran from the head or cam seals or timing cover as discussed above.

 

Fair enough he's there looking at it. Cam seals would explain it. Is he going to reseal the manifold then? Im surprised it's leaking from the manifold. I'd want him to remove the boost hose and have a look in the manifold. If the boost hose has oil in it and he can see that it's really oily inside the manifold then I suppose it's possible that it has come from the turbo.

 

Is this the older style with the center bolts in the valve cover and thick grey rubber gasket? If so, the thick rubber bushing/seals on each bolt is what gives the pressure on the gasket. They get smushed over time and you get less force holding the gasket in place. They're cheap, I'd replace them anyway. Compare then new to old, if the old ones are not noticeably shorter, you the valve cover may be warped or the groove that holds the gasket wore out.

 

Hey man just curious if you ever figured this out? My truck developed a similar leak. Mine is leaking on the driver side in the front just above the oil line that goes to the block from the air compressor it seems like it's coming from the head gasket.

 

sounds like the
valve cover breather clogged up