My car cuts out around roundabouts or long bends in that direction, never the other way, on straightening the car slowly chugs to life then drives off, this problem goes for months then re-appears, it happens with quarter of a tank of fuel or even half, and also if i accelerate real hard, had new fuel filter, and service recent, new plugs year old new leads good ones new spark pack on leads. Is this a pump problem???
