Finally this van has arrived to get work done.Thre are 3 captures attached ,the first is challeging the pump with the injectors and imv disconnected.The other 2 shows whats happenning at approx 3000rpm with the imv and rail pressure.It seems to me that the imv is turned on(to reduce pressure)at about 3.84 volts on the rail and then the fuel pressure gradually reduces .Even though the injectors are ok on the leak back test ,I wonder is one faulty causing high pressure so I have taken them out today for testing .I will post the results in a few day when I get them back.