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Uh oh I'm not sure if you guys can see this. But this is where the stamp pipe goes through the head. Before it seals in the bottom. My wife pointed out to me that there is a crack right there. And I'm chasing a high pressure oil leak in this area.
Well, that nick in the surface is on the rocker carrier, which doesn't have an O-ring or a seal of any sort and wouldn't be a direct leak point for a HPO leak. I do wonder how it got there though.
Did the standpipe you pulled out have any blown seals? Have you been able to air test with the valve covers off?
