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low fuel pressure

  1. 1991 Deville sedan runs rough, intermittent stall, low fuel pressure

    Cadillac DeVille 1985 to 2005 including:1985-1992
    Fuel Pressure very low. (10-15 psi) Replaced fuel pump and filter but no change. I swear fuel pressure 20-25 psi before I changed pump. What else would cause pressure to be so low when checked from fuel rail? Any other tests to track it down without throwing parts on it? All fuel lines look...
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