Is it possible the seals around some injectors could be destroyed...causing the problem you mentioned? I have run some BG injector cleaner through the gas tank, and maybe it was too strong for the rubber compound. Because when it does start theres a "flooded" smell coming from the exhaust. By the way...the truck is a 1998 1 ton dually 2wd, 454 motor. Thanks for your help guys. I know it's not a mercedes related problem...but this is what i drive when the 400E is resting!!!