Filter was done the week before, old one had never been (64000 mile service). Cut out on me a week later, changed filter again for a genuine as I've red that they are picky about them. Re started EVENTUALLY, got home & hasn't started since, when it does it will only run for a minute (maximum), flow from low pressure didn't seem great, replaced pump with a second hand one from a running car, same flow & not cured(Citroen can't get one until at least January, & I need it now, Key worker & all that). No relevant fault codes from Diagbox, low & high fuel pressures are good(5bar & up to 500Bar), signal to injectors(albeit just done with a Power Probe so not very accurate) 5v to all injectors. I'm now presuming injectors but like I say no fault codes & I can't see all 4 failing at once? Could it be a crank/cam sensor with a dodgy signal? Any ideas gratefully received as I'm stumped, I'm not the best but pretty reasonable mechanically & electrically(do almost everything to my cars & bikes myself, & family/mates cars/bikes).
It's a 2015 1.6 BlueHdi, 120, DV6FC.