Technical Ducato 2001 2005 cutting out

[Super01]

Hi new here, I’ve a ducato 2.8 it starts then cuts out, or it will run for 20 minutes on idle, revs up stutters slightly, ticks over, if you hold it at say 3000 rpm it will sit there the almost like a diesel knock then dies, prime the pump and it fires up, same kind of knock when left on idle then it dies, changed fuel filter/ and in tank pump, along with leak off pipes between injectors,

Any advice would be greatly appreciated, should I start to look at high pressure pump or injectors?

Thanks

 

[Super01]

Just a quick question does the high pressure pump have a filter? Could it be blocked if so and cleaned? Just a thought, also what’s class a lift pump ? In tank or high pressure?

Thanks