hi my 56reg 2.0d had problems starting managed to get it going after 3rd or so attempt lasted for 2 weeks now cant get it started. garage has had it for two weeks now replaced fuel filter got it going and running fine but parked on hill bonnet side up and now wont start again. They said that fuel seems to be running back to the tank causing air into the fuel pipe. they have run tests but still with no solutions. has anyone got an idea what can causing this before they start replacing the whole fuel system part by part.