Join Date: Dec 2008
Location: Spokane WA. area
Thanked 990 Times in 755 Posts
[Yesterday it started bucking again and I smell raw diesel.]
The above description in your original post is a typical sign of untimed fuel delivery from a sticking open injector nozzle or cracked injector nozzle tip. Likely sticking open intermittently in your case.
The injectors in these trucks are a continuous issue for most. Also, once an engine has been apart, and not saying that it's every case, but loose injector hold downs or incorrectly installed or overlooked worn components is a common factor that is seen alot.
Jan 03' built 6.0/F250cc4wd trqsft/SCT-tuned by KEM-Performance/Garrett Powermax vg-turbo/blue spring mod/gauges=egt+boost+fuel+SG2/exhaust/airaid intake/DR 4.5 lift/dual bilsteins/315's/greasable ball joints/powerstop/smittybuilt/kc lights/high idle mod/roll-n-lock/Mobil Delvac1 ESP 5W40 with (Archoil AR9100 in the oil) and (AR6200 in the fuel)