I have a 93 F350 4x4 with the 351W and 5 Speed manual. I put a new engine in last month and everything ran great. Last monday I started getting engine noise in my stereo. So I cleaned all my grounds and batt cables. Ive checked all my stereo grounds as well. Sunday I went into town and my truck started loosing power while excellerating... I let up on the gas and it starts to pick up speed but eventually sounds like its missing. Ive checked the timing, plugs, wires, cap and rotor... still have found nothing wrong. Changed fuel in both tanks along with fuel filter .... didnt fix it iether. Has anyone run into this problem or know where to start looking for solutions