Hi Matt, warm start problems with 2004 Audi A6 2.5 Tdi V6 (163). Car has 93,000 Miles, full Main Dealer Audi Service history, last serviced by audi at 90,000. MultiTronic Gearbox. Battery is new and cranking speed is fine.
The fuel tank is full, cold starts are fine but warm starts take 3 attempts and lots of cranking
After a long run I can turn engine off, and re-start no problem. I can leave it 10-15mins and still re-start no problem. Leave it a couple of hours and lots of cranking required.