01 Powerstroke runs good then loses power
I'm new to this fourm and I just bought a 01 7.3 with 116k miles. Before I bought it it had sat for a year. I drove it home and after about 10 minutes of driving it slowly lost power to where I could have it floored and would only be going about 5 mph at 400 to 500 rpm. I got it home and changed the fuel filter which was filthy and cleaned the bowl. Tried it again and did the same thing. It was sitting at an 1/8 th tank and I was told they sometime won't run under a 1/4. Put ten gallons in and brought it to half and ran it again and it did the same thing. I have no clue what would cause it but it sounds like its starving for fuel but no sure. Anybody have any ideas?