Hi, just wonderd if any one could help i have a w reg 1.1 fiat punto when cold it runs fine but as soon as it gets warm it seems to missfire. on idle its fine but as soon as you pick the reeves up it coughts and splutters. i have already changed the throttle body ecu , coil pack (both) plugs and leads i have also tried a new carb but no difference. i have only just brought the car and the last owner tells me its just had a new clutch could this have and thing to do with it. any help would be gratefull