does my 1995 f-350 2x4 5.8 L have a fuel tank selector valve to switch tanks.

What is your question?

I've looked under the truck on the frame but I can't find it. Is it in the fuel pump in each tank? If so how can I tell witch pump is bad

What makes this problem better or worse?

nothing

How long has your 1995 Ford F-350 had this problem?

Just bought the truck