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I have an 1994 mustang gt with a rebuilt 5.0L with a 303 cam! We just got running the other day and noticed that the oil dip stick was being pushed out. I had to replace the PCV valve and the stick is still being pushed out from preasure. Is there any way that the catalytic converters could be causing back preasure becuase of the cam? We have only had the car for about 3weeks now! Any sugestions would be great. Thanks
 
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Welcome to AFM! Let me move this to the 5.0 tech section for you and get you some help. Thanks for joining!
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it is too much crankcase pressure pushing it out. being a new engine, the rings may not have seated. although they should be. is the PCV valve getting vacuum?
 
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