u/DylanH_2005

Im not even sure what to ask or say because im completely lost 😞. This thing has never ran right but it has ran decent and I really dont understand what is going on. It has a misfire and bank 1 and 2 but it seems to run lean or something. Also at start up fuel psi is 71 but when idle for a little it drops down to 43 psi andI just replaced with new delphi pump. If anyone has any idea please help me im lost and getting tired of this truck.