[lugnut]

i'm going to the ford dealer tonight to test drive a new one to see how these trucks are supposed to run. by not buying mine new i really don't now how it should feel. tommorrow i'm trading a guy at work for his 04, the same as mine but a dually to see how his runs compared to mine. pretty cool of him i have to add since we really don't know each other. i'm still having problems. still huffs a huge cloud of smoke and runs rough at start up once in a while. maybe every fifth time i start it. sometimes it just idles rough. last time it did that i turned it off and restarted it immediately and it smoothed right out. the thing that really is bothering me is this. if i'm cruising say 45 mph at around 1200 rpm and start rolling on the throttle putting a good load on it without it downshifting at 1500 rpm it gets a deep lugging sound to it like a miss or a bad vibration. but you can't feel anything. the sound goes away at like 1700 rpm. is this normal?i have tried getting fuel from a few places now, no differences. tried disconnecting the egr. actually felt like it ran worse. added cetane booster/ lube/ cleaner. no difference. racing around with the throttle pinned seemed to help a little, but i shouldn't have to run this thing like a two stroke for it to run good. i'll post later and let you all know how an 06 runs compared to my 04.