Bad gas ?
Just purchased 2016 Allegro Bay V10 gas. RV has been sitting for a long time, very low mileage. Check engine light on, took it to a Ford dealer and they said it was a misfire on two cylinders, blamed...
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This same thing just happened to me on my 2019 last week. Drove it to Utah, accidentally filled up with 85 octane. On my way home the check engine light popped on. P0300 random misfire detected. I called my buddy who is a ford tech he said to fill her up with 91 and clear the code, he suspected it was the fuel.. I took her for a 130mile drive and no check engine light.
