i cant explain how it feels but it doesnt ONLY do it when i go fast it does it alot of different times, dont know how to explain other than when i accelerat it jerks an then if i put foot all the way down on gas it wont go then let up and it jerks again, its sooo annoying, and when im low on gas, it just dies and it will start up again after a few seconds though i havent done anything w fluid except add that fuel cleaning stuff to the gas tank..does no good