Shut off while driving will not start

While driving it seemed the motor bogged down when I pressed on the gas. If I pressed barely on the gas pedal it seemed to continue but if I give it more it would bog down. Eventually the truck slowed down and then the motor quit. I tried starting it, it would turn over but would not fire. I undid the fuel line after the fuel filter before it gets to the motor and turned the ignition to on and fuel flowed fine through the filter. That's as far as I have gotten.