After a tilt truck ride of 400km the fault was just a fuel line that come adrift. I spent a lot of time 50m from the Nullarbor but hope to get past there tomorrow. Lots of pics but no time!
I'm now settled for the night having covered 300 or so km this afternoon. Streaky Bay is a lovely place and truck driver Mick lent me a ute to go shopping and have a look around. When I got back he had found the fault. This meant I could get away after I took Yemmy for a 50km proving run. With day light saving in I was able to drive later.
Here's the Streaky Bay Foreshore.