Yesterday our Peugeot 206 1.1 lost power on the m4. RAC man said it was a faulty no.3 fuel injector when he checked it over on his laptop. However ,following his advice ,I drove back home 30 miles ,mostly motorway, averaging 65-70 mph. It was a trouble free journey home, and it was as if nothing happened a few hours earlier Was it just a blip , or should I take this problem further ? Any advice by any mechanics out there would be really appreciated. Thanks.