Kid thought he was doing me a favor when he used an old steel (leaking) gas can to bring it from empty to a quarter of a tank after he used the car.
It starts and runs but immediately triggers a cylinder shutdown which I can erase on the fly with an obdii tester on my lap but it happens every few minutes where the cylinder shuts down.
Car has a cat (which is why the cylinder shuts down) but the car is a $400 beater so it's not worth taking to a mechanic.
Hence my question is whether I just burn off the rest of the gas or if there's a way to siphon it out. I tried putting a hose down the tank but there is some kind of check valve that stops it cold.
How would you handle it on your own given it's not worth a trip to the mechanic?
Is there a substance (alcohol or acetone?) which "dries" the gasoline?