Trying to help a mate fix his car, he has a problem with his fuel pump in his focus 1.6 zetec... we replaced the fuel pump as it wasnt making any noises and now its making a noise but still not working.. its just not sending fuel out of the top of it. I think it is only getting 6 volts to the pump.. am I right in saying it should have 12v? have tried bridging the relay and its whirring away ok.. any suggestions appriciated.