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  1. M

    Crankcase full of fuel

    Would they just go bad after changing fuel filter housing? Never had this problem before I hooked lines up backwards
  2. M

    Crankcase full of fuel

    I have a 2004 gmc with the lb7. Replaced bad fuel filter housing and hooked up the fuel lines backwards after twenty mins of pumping it and spinning it over I realized something was wrong. Found out I swapped the fuel lines and it fires up but now it’s pushing oil and fuel mix out the dipstick...