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oil pressure relief valve

  1. Oil Pressure relief valve ? 2000 F150

    Ford F-Series, Ford Super Duty, Ford Diesel
    I have a 2000 Ford F150 4.2 I was having trouble with this truck running very rough about a year ago. I changed about every sensor on it including the EGR, plugs, wires, coil pack, etc. and still ran like crap so I decided to take a valve cover off and low and behold a broken valve spring. Darn...