tevol1
Well-Known Member
From lund about log with hood off.
Still has knock. Something else is causing NVH or you have extreme oil blow by from PCV causing effective octane to drop regardless of the octane in the tank. You have a separator on the PCV?
I have the passenger side pcv system plumbed to stock location on the moss manifold and then I have driver side with just a breather.
Get rid of the line to the intake put a breather (filter) on both valve covers. Your sucking oil into the intake causing your octane to drop
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