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  1. C

    PCV Valve

    I'm trying to find out exactly where the PCV is located on a 99 Navigator. It is a 5.4L v8. I have two codes reading 171 and 174 too lean bank 1 and 2. I've read a repair manual but my engine looks nothing like the one in the book. The elbow had a hole in it and the replacement doesn't fit right...
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