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fuel pump o-ring

  1. oil leak past fuel pump o-ring?

    94-98 7.3 Motor Problems
    Recently bought a 97 F250. Ford installed a rebuilt motor in it 3 years prior to my purchase of the truck. I Changed the fuel pump and rebuilt the fuel bowl last weekend due to fuel leaks. No more fuel leaks. However, I notice that there appears to be a tiny amount of engine oil appearing...