I pulled my pump sending unit and found the strainer to be black (not close to being black but BLACK!) My first question : How do I rebuild this unit? Besides the strainer and the pump what will I need and how do I do it? I don't want to half-ass this, I want it fixed and done with but I have never played with a sending unit before and I'm a little rusty on where the check valve is (in the pump?) and if this vehicle has a pressure valve in the unit (I doubt it). Any and all info you can give would be awesome.