Dci starting issues

[Archtronics]

1.9 dci engine.

Engine will start first time run for a few seconds then cuts out.
Eventually it will restart but needs turning over quite a few times to get going.
Also the ignition stays on even if you remove the key before it restarts which is weird.

I’ve checked the injectors and they seem fine, I’ve got a a new fuel filter enroute and I’m going to give the egr a clean.

Any ideas on a likely cause, the ignition thing is making me think I’ve got sensor fault somewhere but no codes are coming up so I’m at a bit of a loss.

 

[Archtronics]

Ok to update this, figured out its not getting fuel if I prime it by hand it starts and runs fine.

Since it runs fine once its going I assume the high pressure pump running off the engine is working fine and problem lies with the sender unit in the tank if it has one?