Re: Back again. Same fuel problems
Check Carfax, but it's fairly easy to "fool" Carfax if there are no insurance claims. Also check local history where the truck is from. Additionally, there will be tell-tale signs, besides the problems you are having. Look for debris and rust, especially in the interior, where you wouldn't expect to find such stuff.
If it is a "flood victim" it will "nickel and dime" you and demonstrate the problems you are having until you fix it. Best way, find a total in the junk yard and buy the entire wreck. You can then remove what is needed, use the wreck as a guide, then sell what is left. The dash not withstanding, it's not hard to change wiring harnesses and electrical components, but it is time consuming.