thanks Jacobandnickolas My ford cougar 2.5 v6 is getting 4mpg whats wrong with it just got a new MOT help iv been looking at it all day and i cant find any leeks and the light is not on do u think i should unplug the battery and start fresh or should i get a new fuel regulator or do u think its compensating for something all this started when i picked up my car from mot and had the brakes all dun