I was having hard starting and white smoke. It turned out to need injector cups for the white smoke (coolant) and 3 new injectors. I was also told early on that the tech could not pull a vacuum on the fuel system and that part of it was external. I replaced 8 - 10 O-rings in the fuel system and that helped some.
An aside. I keep hearing about a manual prime pump. Do they all have one? I have yet to find one on my 2004 Volvo 12 liter.
Brad