I have a 2001 F250 V10 with 123000 miles on it. When you first crank it, it runs fine for a few min. It then drops the RPMs and sounds like it is not getting enough fuel. It will do this for a few min. it then sounds like it gets fuel but sputters. Just the other day while driving it down the road the truck began to surge. It would go from 2000 rpms to 3000 rpms. The check engine light is not on. I have replaced the spark plugs, replace all 10 COPs, fuel filter, checked CAT and I am still having an issue. Please help, I do not know where to go from here.