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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One of our drivers put a lot of diesel in a V-10 motorhome and Ford charged us about a grand to flush the system. It ran bad and smoked a lot. Ran great after the flush.
