P CODES (POWERTRAIN) P1300 - P1399 P1310 Questions

I Am Getting Codes P0300 And P1310. The Car Sputters While Driving, Dies, And Is Often Hard To Crank. I Cannot Figure Out The Problem....

I Just Spent $1,100 Dollars Replacing Two Oil-fouled Fuel Injectors (#4 And #6) And An Ignition Coill (#8 ) And The Truck Is Still Giving...