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for past few months i have replaced the #2 injector 7.3 psd .
ran good for a bit .
replaced all wiring on driver side
had neighbor take to ford guys and the started research
say #2 is miss fire again(poss scratched or damaged o-rings)
# 8 has an issue? unknown just porblem signal
truck when started from cold blows out light blue to white smoke and smells like unburned fuel
when driving clears up and runs smooth
when turned off or get to idle, feels like a miss- lopes.
2001 f-350 4x4 lariat
please help if you might know
Welcome to FTE. I'd skip over the #8 issue for now since that's fairly common on these motors. Did you use a new or rebuilt injector for #2? What brand o-rings did you use with the injector? We've seen aftermarket o-rings fail that quick.