What Would YOU Do?

[Sim6]

Now i'm not an expert but If It was mine i would remove all the spark plugs and turn the engine over by hand (with a wrench) if it spins free, I would bump the starter and see how it acts. Trying to figure out if the starter is malfunctioning or if its in the motor. I would expect the gas to run down past the rings easily enough but......if you care about the motor which i'm sure you do once that issue is resolved I would change the oil to get the gas out of there. Gas in the oil shouldn't make it act like that. Just ruin the viscosity and protection the oil gives.