Sorry yea theres a locking valve on the fuel tester.
That was the specs stone cold , Same everyday - going to try again in half hour. The cars great when its warm.
So could it be that anything in the fuel system before the fuel pressure tester is blocked ( does this include the wur? )or one of the parts failing to produce the power to push the fuel through? What else should i be checking? would fuel tank pressure affect this? And i also seen air in the fuel return line , is that meant to be there?? Cheers