I have a MY05 with 171k in it. Filled up my tank and had misfires not even 10 minutes after a fill up. Replaced my spark plugs and coil packs and still misfiring. My new suspect is the gasoline. Anyone have a good, easy way to get all the gas out of my tank? It’s about 70% full.

 

Could be valves

 

Did you buy gas from a reputable station, it sounds like it has water in the mix. You can add water remover to the tank and see if that helps. There is a way to drain the tank but it is a bit of work and not the safest thing to work on.