I bought a 2000 Ford Contor. When I got it i Had a problem with the fuel filter. It had some kinda black substance. I replace the filter it ran for 2 week the went out to go and it would not start. I thought it was the injectors, so i relpace them. Still no luck. I decide to check the fuel pressure and their was none. I just replace the Pump yestorday it start up and move. Just it spit and sputter now. i chech all my work and everything on right no line kink or anything. Have any Idea on what that problem might be?