With a lot of engine issues, I couldn’t get my Cayenne to start consistently. The car would sometimes start but then stall out. Van quickly identified the problem and made sure I was able to get a new fuel pump.
It’s a good thing that you had Van diagnose and repair the car. Thanks for letting us know.
Who is this Van fellow? Suggest to ask him to post his diagnostic method here. We may all learn something new, and be able to pay it forward.