xc90 Help

[Mick130]

Hi
Have a 2012 d5 xc90 (95k miles) giving me some trouble.
Car started fine and i drove 5mins to the park, was there an hr or so and found car hard to start when leaving- cranked for 25-30seconds.
Dropped kids off and headed out to check if car was going ok, on tick over could watch rev counter fluctuating very slightly and feel engine not just right. Car seemed fine when driving but stalling when sitting at a junction, again started after some cranking.
Drove home and parked in shed and tried the next morning again, haven't been able to get it started since.
Put new fuel filter on and loads of fuel to the pump. Local fella plugged it in and no error codes showing, he checked rail pressure etc which was ok and injectors were pulsing.
Any ideas what could be the problem

Thank you.