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Used to be a member on here along time ago but can’t remember my account credentials but recently purchased a “minty” 1989 F250 supercab 4x4 7.3 idi C6 auto, 4.10 gearswith, ready for this, 69000kms. Purchased off the wife’s uncle who had it since new. Not a spec of rust anywhere just some sun fading. Not new to the 7.3 as I had a 91 let go in 98.
Anyway here is my problem. Hard on fuel and no power. No fuel leaks that I can see. Starts real well. Revs @ 2700 ish at 60 mph. Changed fuel filter. Just to let you guys how bad it is I did a 0-60 test. 27.52 seconds. Yes that is correct 27.52 seconds. No black smoke at all. Rear tank I got 200kms on it (120miles) seems bad to me.
What you guys think my problem is????
 

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Today increased fuel screw 3 flats and now I have smoke but 0-60 is just shy of 25 seconds. Tried to pull air filter with no change and I made a mistake. The gears are 3.55.
 

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It sort of sounds like pump timing might be off. Or maybe some of the injectors not popping at the right pressure.
 
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