hi evry1

I have a 1.8 TDCI focus 2005 old shape , when driving at above about 30mph the car sort of misses a beat or has flat spot for split second then its ok, this can happen at constant speed or when accelerating , has anyone got any ideas, BTW im new and also dont know a lot about cars

thanks in advance

you can try cleaning egr with wynns egr spray claaner. this should help in showing you how to do it.