In case it wasn't clear, the tights comment was meant in jest!  

The way I've done it is by rinsing out a drinks bottle, leaving it to dry fully, then pulling about 500ml of diesel through the filter into it.  Haven't had an issue so far.  But we've both offered opinions here so the OP can make their own decision.  

On a car of this age, I can pretty much guarantee there will already be a load of muck in the system from people half-a*sing filter changes and not cleaning pipe connectors before removal.  

I'm also still fairly sure this is an electrical fault - and that is what I'd be chasing right now.

im planning on bypassing  the fuel system and for testing purposes only using a jerry can of clean new diesel  having a clear pipe go from the can to a hand pump or electric pump then to  an  inline filter then to the  high pressure pump, then have clear pipe from the rail back to the jerry can. Ive started getting bubble appear again so their has to be air getting in somewhere.

Look. Don't, just don't. You'll end up with blocked injectors then you'll never get it fixed. An inline filter is equivalent to a pair of tights! As Tom has already said, you should be looking for an electrical fault. In case you missed my previous advice, I've copied and pasted it below :

If the injectors are disconnected electrically, then when you turn on the ignition, before cranking, the ecu/PCM will detect am open circuit and set a code, individually for each cylinder..... Forscan will detect this. Can you try doing this maybe a cylinder at a time.

If you do that, it should prove if there's something not right with the injector drive Circuits. 

when i said inline i didnt mean a tiny petrol filter, i ment a proper diesel filter, its from another diesel car but never used it. Would that not be ok?

ill try the injector test first

Tried the injector test, ignition off unplugged 1 injector,ignition on and scanned to codes and no dtc. I unplugged 2 and scanned codes, no dtc. Cranked it over for a second and no dtcs 

Using forscan? As it's a Ford-specific error you don't get a generic reader detecting it. 

Yep forscan

Can you check the injector coil resistances with your multimeter, Tom earlier wrote that the injectors could have been fried. Worth eliminating the possibility. 

Yeh I’ll have a look tomorrow,What resistance are they meant to be?

i would have thought  if the injectors were fried the pcm would have had a constant open circuit code on 1 or all 4

Injector 1 180.7 

Injector 2 180.7

Injector 3 180.4

Injector 4 180.7

51 minutes ago, nemesis0124 said:

Injector 1 180.7 

Injector 2 180.7

Injector 3 180.4

Injector 4 180.7

Those resistance readings are perfect. 🤔

Can you check the resistance between the PCM plug and the injector plugs?  (Should be virtually nothing but still have continuity)

 

do you mean check for breaks in each wire from pcm to injector as ive done that and all were good around 000.4 

4 minutes ago, nemesis0124 said:

do you mean check for breaks in each wire from pcm to injector as ive done that and all were good around 000.4 

Yes.  Sorry, I must have missed that earlier.

You could also carry out a 'short' test by measuring resistance at the PCM plug with the injectors plugged in.  Should get near enough the same 180 Ohms from the PCM plug as from the injector plugs. 

If there was an open circuit (wires crushed together in the loom perhaps) then you would get 0 Ohm's on this test as electricity takes the path of least resistance.  It would bypass the injector altogether.

If the injectors and the loom are both good, then that suggests potentially the PCM at fault.  Did you ever find out what caused the short in the original PCM?

I have ordered another pcm just incase, as i find it odd it never showed a code when i unplugged the injectors. I never found what caused the first pcm to fail, which i dont like! Ill check the injector wires

checked the injector wires all matched  179.9 except for cylinder 2 which had a bad connecting on the injector plug. not sure if that could cause all to show as open circuit. Also checked the readings form the injector plugs with them disconnected towards the pcm they all showed around 1.046 in one orintation and no connection with the terminals swapped over. 

1 hour ago, nemesis0124 said:

checked the injector wires all matched  179.9 except for cylinder 2 which had a bad connecting on the injector plug. not sure if that could cause all to show as open circuit.

Seems unlikely but at this point it has to be something unlikely.

Have you managed to improve the connection?  Worth trying to crank it again now if so. 

Would also check battery voltage as that may be getting low with all the cranking attempts.

grasping at straws at this point! Battery was nearly flat so going to charge it and cross my fingers tomorrow. Managed to get the connector to connect properly

no go still no start😔

Is their anywhere I would be able to get a full pin out for the ecu?

Did this ever get sorted only we have a 2.2 Mondeo mk4 2011 plate same thing, no start. It came up fuel pressure high fuel pressure low. When it died while driving, cleared the codes just getting low pressure all the time now. Fuel isn't moving in the lines at all. We have changed the fuel filter but no joy.