Hi everyone, need help! Got a 06 F250 4x4 with about 140K miles, this problem started about 2 weeks ago and has gotten worse. Started by it taking 3-5 cranks to get truck started, once started it ran fine, then it started to turn off the minute I would put into Drive and give fuel, I would restart and then it would run fine the rest of the day. I have no check engine codes on dash. Had mechanic change 2 engine sensor, one of them being the cam sensor, and he repalce the egr valve, it was full of carbon, now the truck doesn't want to start at all! The only way it starts is if you give fuel and keep your foot on the pedal to keep going otherwise it will turn off. Can somebody help! Thanks in advance.