Hello, I have a problem with my Fiesta! GFJ ; 1,1 L ; 37 KW ; BJ 96 He does quite normal, which is already positive! In the stand he doesn’t really run around anymore! Somehow than if not all pots run! Besides, he doesn’t really get on power anymore! Top speed on a straight track is about 100 kmh. It’s especially bad when it goes up the mountain, here he only gets 50 kmh. Who he is still cold also gets a jerk. The whole problem had ic h at the very beginning already times. I then changed the spark plugs and the air filter, then it also got better. But since I drive only short distances by car have since only about 1000 km more to it! In damp weather he then from time to time jerked who went up the mountain but otherwise he drove impeccable! Since I have no rev indicator I can unfortunately not say how the speed in the stand is neither like it is during driving operation! I would exclude the cat there d he would not have gone away again! I would have guessed on all cases. I would be very happy about help!