2008 XC90 3.2 petrol Hard start when warm and errors of misfire

[cminde7]

Can anyone help me out with my problem.
3.2 Petrol starts fine when cold, if I stop for 15 minutes it usually would not start at first try.
I had long history of trying to fix this issue which started after fuel pump was removed for service.
When I turn engine off fuel pressure drops to 0 instantly, but I am not sure how to check which part is faulty.
No white or black smoke at any time.
I also keep getting misfire errors in cylinder 3 and 6 mainly, but sometime random multiple.
Did anyone had any problems like mine or know the solution.

[cuhfs]

Not much to add here but maybe swap out the injectors to different positions to see if the misfire code moves; perhaps they are the problem.