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Q: pcv system on a 2000 navigator 3.4l v8
on 1999 Lincoln Navigator

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
why does it have 3 hoses going into the pcv valve?
(1) Answer
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PCV systems normally allow "breathing" of crank case blow bye from both valve to be reintroduced into the intake manifold where it can be "recycled" for emission purposes.