Hi, Ive got a 2.0l 8v, 100k on the clock well serviced etc. Sometimes it drives perfect, put you foot down and away you go. Other times drives like a bag of cack. So lumpy, you put your foot down and it feels as though you're trying to choke it to death. Cleaned out the air box and the filter is clean, dizzy cap clean and plugs look good. Maybe it's the fuel filter or cat, just don't know.Driving on the motorway today, dropped it in to fourth from fith it just did not want to know, really struggles to get good revs.Starts and idles perfect. Would appreciate any help :D , cheers