add some octane booster/fuel treatment to your tank until you can fill up with good gas and flush all of it out.
Do NOT use Diesel fuel in a Ford Focus. The engine will stop running and you will have to drain the gas tank to rid the car of the diesel fuel. Gasoline engines are not designed to run on diesel. They do not have enough compression to cause the diesel fuel to combust The only engine used in a 2000 Ford Focus was the 2.0 which is NOT a diesel engine.
Easy, get rid of it
you need to take it to ford and let them put it on a computer it could be one of many things Have a professional repair the problem with the SRS. They will reset the light after the repair. the repair
if it is a grvity feed system remove line from carb and drain into pan, otherwise siphon it out
The only way to "get rid of radon gas" is to ventilate the space in which it is accumulating.
You cannot get rid of a bad egg. The game will treat the bad egg as a real egg and will not let you get rid of it. So the only way to get rid of it is to delete your game and to start over.
there maybe a witch hiding in your glove box. be very careful. Hire a professional witch hunter to rid yourself of this problem.
If you have a bad egg, your game card is finished, you can never get rid of a bad egg.
by farting
Intestinal Gas
divorce
The best way to get rid of a bad egg is if you have 2 ds's, another ds Pokemon game that you hate and trade the bad egg to that game and there you have it. This is the best way to get rid of a bad egg and P.S. you cannot give a poke'mon an egg.