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...
Stick a hose in the filler, and siphon it all out. Fill with hightest, and Lucas, and it will clean itself. Find any downtown NY street kid, they will siphon it for the gas.