My x-type diesel has been struggling for a few months running poorly and struggles to start (more so when warm). Jag told me the EGR and inlet manifold was coked up - which I have now cleaned. runs much smoother however day 2 the starting issues have arisen again. Jag suggested turbo actuator however i cant see that would affect starting, would it?

The issue you're encountering with your 2005 Ford Focus may be related to the EGR (Exhaust Gas Recirculation) system. The EGR system is responsible for controlling the amount of exhaust gases that are re-circulated into the engine, and a problem with the system can cause the engine to run poorly.
In your case, the fact that the COMMAND EGR value is stuck at 45-50% indicates a possible issue with the EGR valve or the vacuum lines that control it. A clogged or stuck EGR valve can cause the engine to run poorly, which could result in the symptoms you're experiencing.
I would suggest checking the EGR valve and vacuum lines for any signs of damage or clogging. Clean or replace the EGR valve and vacuum lines if necessary. Additionally, checking the vacuum solenoid that controls the EGR valve and ensuring it's functioning properly can also help resolve the issue.
If the EGR system checks out and you're still experiencing the problem, you may want to consider a more in-depth diagnosis from a qualified technician, as the issue could be related to other components such as the throttle body, MAF (mass air flow) sensor, or catalytic converter.

Could be a few things , injector leaking or defect spray, carbon build up on inlet valves resticking air flow and over rich mixture.

fix the problems reported by the reader and test run
use the scanner again to see if that has fixed the faults

Equipped with glow plugs? If so, check glow plug operation and functioning on all cylinders

you are on the right track, start with replacing plug wires, then the plugs. first thing i would check. but when you replace one replace them all so you will not have to change a different one every few months. after checking these please let me know what happened, if more trouble shooting is needed i will help you. please let me know if you got covered or if i need to put a little more my brain power to help your horse power.

golfs coldstart system works when you open door/shut door/put key in hole and turn on (in that order)if you delay puting belt on for longer than say 30 secs the coils go cold,hence poor starting.if engine labours after cold start try using (really)one gallon of petrol in tank to clean injectors.
british army put petrol (30%)in diesel tanks of challenger tanks in arctic
to stop fuel freezing.....most parts replacement jockeys in garages will say if you put diesel in tank it will have to flushed out.lot of bollocks.
trust me.have put petrol in by mistake loads of times,only get hot start
problems if you put in too much.

if it is diesel i had the same problem plus poor mpg. it turned out to be the rubber pipe from the egr valve to the intercooler that was split cost at jag dealer £73.27 hope this helps. boovie

i had this problem and thought the fuel filter oil filter needed replacing so i have just had a service done but problem is still there but not as bad. been told it could be the AGR valve or a split pipe going to it which recuirculates unused fuel back to burn again. therefore unspent fuel is coming out of the exhaust causing the black smoke. i am still looking for the answer aswell, hope this helps.

Sound like you are looseing some boost from your turbo,check all your hoses from your turbo,if all of them are ok you may have a waste gate sticking, you need to check for movement there it only move very little but has alot to do with hp.Thanks And I hope this helps you

change the diesel filter it builds up rubbish from the tank