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Its a 99 F-350, V10. The truck has sat for the better part of 3 weeks with half a tank of gas. Ran fine when I shut it down. Today started driving it a bit again an noticed that when in gear up until about 2000 rpms its running rough. Step on the gas and it clears up.
Replaced the fuel filter today it was due. Put in a bottle of dry gas,injector cleaner, with a some new gas. Drove around for a bit and the same thing. A year ago I had new plugs and the coil paks.
Can it just be an issue that because it sat with the gas and just needs to be driven? or should I be looking for something? By the way there are no codes at this point.
thanks