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Ford 4.0 Rocker Breather

Discussion in 'Tech Banter' started by Bognoel, Mar 26, 2021.

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  1. Bognoel

    Bognoel Registered

    Jun 27, 2020
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    just wondering if anyone has had problems with rocker cover blowing oil or not having enough ventilation. had mine running to inlet manifold and had huge knock in bottom end, removed from inlet manifold and knock went away. i then had filter on rear outlet and oil started coming out

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