i went to drive my car just before, and on gas it drive goodf or 100 meters or so, but them, dont wanna rev more than 1200.... if i press 'go' more, it revs up a little, then dies, revs up and dies revs up and dies??????? switch to petrol, and drive a bit, then back to gas, goes good, then does it again????? the converter is gettignwater.. and its got 1/4 of a tank (thats wha the tank guage says but ive done about 200 kays on 15 bux of gas) could it be empty? or more serious?