Good day I have a 97' 200is kaddett. After running for a while it starts to jerk and splutter. I put my foot down on the accerator and it sounds like fuel starvation coz it wont rev up and and puffs out smoke out the exhaust and u can smell its fuel. Once the car dies it wont start again unless I keep my foot flat on the petrol. Once started, still splutting and struggles to rev up? Plz help me as I dont knw wat to look at?