There are a couple of plugs that need to be installed to plug the oil passages in the block. Let's see if I can remember where they are....one is located towards the rear of the block beneath the lower intake and another is located in the front under the timing chain cover, or somewhere up front.
I would have to get a manual out to be sure but just curious if you had the plugs installed. That certainly would cause a problem building any pressure. Just a thought.
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fordgasm
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