Cut out won't start

[TipToe1]

V70 R-Design Se D3 136

A local chap is selling his 2010 V70 as it cut out and now won't restart, it's done 245k but it's spotless and he has looked after it at no expense and it's just had a new clutch but he was going down the motorway and it cut out and now won't start.
It's at the garage who fitted a new injector but it still won't start.
Google suggested that it could be the fuel pump which he says he can hear so it's working and that there's half a tank of fuel so isn't a fuel delivery problem.
The garage have said ( apparently) that it seems to be running on 3 cylinders but how they have come to that i don't know as it won't start, whether they have tried easy start in the intake I don't know so the owner is worried that it ' Might of dropped a valve' ?
So if anyone could suggest other possibilities I'd be extremely grateful...

[GrahamBrown1]

Think I’ve seen this listed on the internet. If so this is the 4 cylinder PSA engine and not a Volvo D3. The description sounds very familiar but forgive me if I’m mistaken.

It could be anything without a diagnostic read out you are struggling. You need to confirm fuel supply at the rail. Monitoring rail pressure will give you an indication. It needs over 300bar in the rail to even think about starting. If you are not getting this then you have a fuel delivery issue. You then need to split the system down to high and low side. That is where I would start. If it is the PSA engine they take some bleeding up normally with an inline hand primer plumbed in.

[TipToe1]

We're probably talking about the same car and he'd let me have it for what it's starting price is to get rid and save messing about , even if I couldn't get it going I'd strip it but I'd like to see if it would run.
This would be my first Volvo having always been with Alfas and I have software for the Alfa to diagnose, code and check fuel pressures ect ect but not for the Volvo and I was hoping there might be a "usual trait" which might be the cause and easy fix ...