Actually I did mess up a little bit - sure could have been worse.
Low on gas and in a hurry this morning, went to fill up, opened up the flap and started to open the gas cap when I noticed the whole gasket area was full of rainwater from the storm last night.
Didn’t completely remove the cap, but enough to be concerned. Fished around in the toolbox looking for some baling wire, luckily found some and poked it down the drain tube. Rainwater drained away and I got the muck out of bottom as best as I could for the time being.
When I removed the gas cap, there was about 2 or 3 inches of water sitting on top of the inner flap - thank god there was an inner metal seal or I’d be screwed. Got a rag and wicked the water out of the filler pipe, finishing off with some paper towels.
Satisfied I’d got most, if not almost all of the water out, I filled the tank. Thought about getting some methyl alcohol later but remembered having some alcohol in the door pocket (covid thing, right) so put about an ounce or so in for good measure… what crossed my mind though was that gas these days is laced with ethanol so maybe water in the fuel ain’t such a big deal? Don’t know. Belt and suspenders approach was my solution.
Car seems fine after the experience but must check after heavy weather …the drain doesn’t block THAT often, but it does block.
Note to self - remember to check before opening gas cap!!