2001 6.6 duramax
 

I replaced the head gasket, cleaned the injectors, replaced 4 valves, water pump, and thermostat. I have a Bully Dog power pup installed, K&N FIPK air cleaner and the truck ran great for a few months. Now when I accelerate the message light comes on and the truck stalls but restarts everytime. I know I have a fuel starve where do I start along the fuel rail. I will say this one injector was loose and i was dropping fuel under the truck but the truck ran great after I fixed it, the problem started at first it only happen every now and then and got more frequent. OK guy's who has had the same problem? HELP!:argh: