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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I have an older V-10 motor home. It was missing slightly and the mechanic found a bad coil. Big improvement in power. The "bad gas" sounds really suspicious to me. I think I would get a second opinion.
