It has nothing to do with the engine you stuck in.
It all about how much you swapped over from your 6.9. 6.9 and 7.3 are the same engines. 7.3 just has a sligthly larger bore.
6.9s up to the end of 1986 use the thermal-controller and the HDS 305 glow plugs.
6.9 in 1987, and the later 7.3s (1988-1994) use the electronic controller and HDS 307 glow plugs. Same as Delco 32G, Champion CH84, Beru 0 100 271 101, Bosch 0250 202 254, Ford Motorcraft ZD9, Lucas DS092A, etc.
I have no idea how much of your original truck wiring you kept. Maybe that's your problem?
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Today's Featured Article - The Rescue of a Fordson F - by Anthony West. Introduction I live in the UK and have for many years restored Fordson tractors (in the main model N's). I have also restored and shown model F's, E 27N's, Field Marshall Series 2, David Brown Cropmasters and the old rey Fergeson T 20. At one time I had seven restored examples which were shown and used in ploughing matches. As most restorers, I have a number of war stories I can relate on a range of topics that may help other like minded and interested people. Perhaps my first p
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