Been doing this for months. Just replaced my fuel filter like 40 miles ago and it still does it.

Its bad enough where the truck will try and creep forward if I'm at a red light and I'm pushing very lightly on the brakes. It does it every 5 or 6 seconds. Idles smooth then surges up very little. But enough to notice the oil pressure gauge move.
I would love to get this problem fixed, its very annoying!!

 

bump

 

CP3 regulator? If you can monitor the fuel pressure this will tell you a lot