Hi, I've had a long running issue with my Esprit I'm happily driving along when the fuel pump becomes very noticeable the car loses power and then cuts out. Usually on a dual carriageway. Least I get my steps in for the day pushing it. Anyway yesterday when this happened with a full tank of fuel, I opened both petrol caps and the car started straight away. I have ordered new supply and breather hose and will repipe the system. I can't seem to find the flow lock valves for sale shown on the diagram. Does anyone know where I can get these???? AND has anyone else had this problem.