Cars need gasoline to run properly. However, even on a full tank, drivers can experience difficulties. The engine not starting, lack of engine power, or engines that sputter and run on–these are all signs of bad gasoline. Once the bad gasoline is in the tank, it either has to come back out, or it must be “fixed” in some way. Ignoring bad gas can lead to clogging, stalling, weak engine power and irregular combustion.
Remove the tank and get rid of the bad gas. This is the most effective way to get rid of gasoline without harming the engine of the car. However, it is also the most labor intensive and complicated. If you are not a trained mechanic, it may be best to hire someone to do this for you.