I just set up the DieselGiant (DG) purge and so far it has not worked very well. I haven't even been able to get a single pop from the engine.
The DG instructions give no indication of the need to prime the purge system. After completing the purge, the priming is mentioned. Out of curiousity I decided not to prime it and give it a try. I had thought that with the bottle very close to the IP that it might just work. But the engine did not even give a pop. Then I started priming and watched the bubbles from the return line. It took a minute or so and then the bubbles disappeared. What a pleasure not to have even a single drop of leakage from the new Bosch manual pump :-)
Next, with a little confidence I sat into the car and had another try at starting. There was lots of revving but, again, not a single pop. I checked the main electrical lines around the fusebox and they seem ok.
Back to the drawng board :-)