This is far more common then you think , I have seen it a lot
Put the manifold back on , check all hoses going to the intake as some could be blown off and start the car
EVERY Focus SVT I start I hold the throttle to the floor till I hear the engine spinning then let off the throttle
You have a LOT of oil going to your intake , this is from the breather off the valve cover and the PCV and why I always tke these vents off the intake and vent them to the grown
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