So i started driving my 7.3 idi more and ive noticed that at high speed/ high rpm it sounds like its sputtering akd it feels like it too im not sure if its the old fuel getting worked through the engine or the seafoam i added to it and ideas/ help would be great:bs:
No,buy a new fuel filter, fill fuel filter with ATF, run truck a bit to let ATF in the injection pump, let it sit overnight. Advance the timing a dimes width. Start it, go from there