My son has a C4 1600 petrol which is playing up. WHen you turn the ignition, everything appears normal but when you then engage the starter, it turns over for 2 secs, makes no effort to "ignite" and the cuts out totally even with key still turned to start, it leaves a depollution warning light illuminated. This is totally consistent in that the time it turns over does not vary at all. One of his mates towed it to the garage and I don't think it even managed to start when being dragged. Any ides as needless to say, the car is currently unuseable! thanks