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Cars & Trucks Master
5,569 Answers
- Posted on Jul 01, 2017
Re: 1984 f250 fires only when rolling back key switch
If your saying no spark at the plugs, The positive side of ignition coil should be hot, with key in crank or run position. If it isn't, I'd have to check ignition switch and wiring circuits.
I don't have a good wiring diagram for your model year, I can't look up wiring.
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