my escort was running boosting fine then jus cut out as if no petrol, gotr her home and checked metering unit am gettin pressure out the filter and got pressure out the return ect but no fuel coming out 4 injectors on the head of the metering init, when i push the flap down get some feul out but only runs for a couple of second then wont start again, so is only running briefly on the cold start, the pump is wired direct to battery have checked for vacuum leaks ect jus cant understand why hav no fuel all of a sudden , can any one help