it is fresh gas, the reason it quit running 10 years ago was the fuel pump, tank, and injectors were bad and i have replaced all of them. i have pulled all of the spark plugs in it and they look almost new, and i had it running for about a week before it did this little spaz. i am goingto try and get a new rotar and cap for it in the next couple of days, but i may or may not have a problem with the rotar coming off, i tried to pull it off but it seems to be stuck, is there a screw or bolt on them???