Have had my 504 front injection pump overhaulled by Geoff Battersby in QLD (who seems to have done a great job!), and then took the pug to my local for an oil change and "tune-up". It seems that once my mechanic touched the mixture he couldn't seem to reset to how it was.
It occurs to me that Geoff must have tuned the mixture when it was cold and the pump was off the car. Anyone know the exact setup of the mixture screw and idle bleed valve?