I have recently bought a mark II Punto 1.2 (2001) and have started noticing a stutter both when the car is idle and when the revs drop. It doesn't seem to happen when I increase the revs. At the moment it isn't bad enough to cut out, but I get the feeling that it will if gets worse. Does anyone know if this is a common problem and what the possibilities are? I have been told that replacing the leads may help. Many thanks