truck runs fine,after driving sometimes for awhile sometimes not, it acts like

check fuel pressure

Test fuel pressure when it's acting up. -----MIL on? Get 'fast' codes----- LED odometer? Cycle key---ON-OFF-ON-OFF-ON-----------watch ODO. display for codes and post here or guess.......code is not necessarily the fix , just a source of the possible cause...................Did someone put rice crispies in the gas?