Ford Fiesta 1.6 tdci - Garage diagnosis does not make sense to me - Milegurts

Hi this is my first post on here and I am hoping to find some advice or peace of mind and I know i could be jumping the gun
My daughter has a 1.6 Diesel Fiesta and it has been having trouble starting from cold it is an 09 plate. It runs fine when started but took a good few turns to get it running.
At first being a decent Dad I tried changing the glow plugs, I could only find 2 though so I changed these and then booked it into a local garage to get the others changed straight away. These were changed along with a relay that was found to be faulty. This did not cure the problem though and the car was not bringing up any errors on diagnostics. This garage told me they could not find the fault and recommended I go to a Diesel specialist..
I took it to a local Diesel specialist and left it with them to have a look at. After 2 days I phoned them to see if they had any success only to be told that 3 of the injectors were bringing up a fault when starting from cold and that they were going to get them sent away for testing. I explained to them that I thought this was surprising as the car had just been through a diagnostic and no errors were found. I got a bit of a fob off on the phone so decided to go down to the garage and discuss face to face. On the way down I phoned the first Garage to double check that this fault would of shown on the diagnostic that they did which they confirmed and said they have a record of there tests as they keep them.
When I got to the Garage the car was already being worked on and they told me that they were struggling to remove the injectors. I questioned the fault they had found and they said that the coil was open circuit at start up and then were ok once running. I said this seemed unlikely as a coil is good or bad and never in between. I said this and explained I was an electrician and understood how coils operate. I was told that it was possible due to the needle on the injector being part of the coil circuit and that the other garage had not diagnosed it as they dont have the test kit that we have. At this point I said I remained unconvinced but I could not offer any further insight. They told me if the injectors were sent away I would get a report of any findings. I was in a bit of a position as the car was in bits now.
The next day I looked up injector specialists and phoned for advice. They said as I had suggested that the fault they were describing was impossible ie you either have a circuit or not. I again phoned the garage and asked them to explain why they were removing these given that what had been said and asked them if they were in any way unsure to phone their injector people and explain the symptoms. They told me they would do this.
Anyway after the easter break I phoned to see how things were going as I hadnt heard off them and they said they were still struggling to seperate the sleeves of the injectors. Again I questioned if they had sought any other advice and I was told they had.
Today I phoned up again after not hearing anything to be told that they were in the process of fitting the new injectors. I was totally blown away by this as I had thought I may of been given a call or better still a report on what was wrong with the injectors. I was a bit dumbstruck by this and I said I will phone back in the morning.
So that is the rather long story but my main concern is we are going to get the car back with a large repair bill and it will still not have fixed the problem. Do I have any legal standings here as they have not quoted me on the new injectors and were they even needed.
I hope somebody has some insight. Thank you for reading

Ford Fiesta 1.6 tdci - Garage diagnosis does not make sense to me - elekie&a/c doctor

Modern day common rail diesel engines are an extremely complicated bit of machinery,far more so than an equivalent petrol engine.All the components run at very accurate/tight tolerances to allow correct combustion to take place.Replacing the glow plugs and relay is a complete waste of time ,as crd engines do not need them for cold start unless the ambient temp is below zero.A diagnostic test may not flag a fault with the injectors as it cannot test accurately the flow and spray pattern.The injectors need to come out to be tested and there follows the next problem of getting them out in one piece without damage,as they often seize in the cylinder head.So in conclusion ,hopefully the new injectors will solve your problem,but no crd system is cheap to fix.Agreed ,the garage should have informed you that they were fitting new injectors,but you are in a do or die situation.

Ford Fiesta 1.6 tdci - Garage diagnosis does not make sense to me - Milegurts

Thankyou for the reply I was more enquiring as to if this does not fix the problem (as I am worried will be the case) do I have any rights or am i just meant to pay for this and chalk it up to experience.

I am not convinced by the diagnosis as I dont believe from what I have read / been told that injectors work as he described but please let me know if his version is a possibility. Coil resistance open circuit temporarily when engine cold. I would think this was more likely something switching before the injector.

However what I know about injectors I could write in capitals on a postage stamp so I am in a do or die situation in the respect I have to rely on a professionals opinion I just hope he doesnt have bigger handwriting than me :).

I will be extremely happy if this is the problem and I will apologise for doubting him if I am wrong.

Ford Fiesta 1.6 tdci - Garage diagnosis does not make sense to me - injection doc

Totally agree with Elecki& ACdoc

The only way to test diesel injectors is either off the car in an injector rig and these can often cost in excess of 90K or by carrying out current consumption draw on an ossilliscope and using a fuel line pressure transducer.

Most of the above is above the average garage.

I also must add these injectors do sieze or ( carbon into the cylinder head and can be a nightmare to remove )

Fault code reading for diagnostics is a total misconseption these days and it gets frustrating when both main dealers and many garages either replace parts because a fault code has flagged or the computer says no. this method applied some years ago when diagnostics were simple but these days a full diagnostic check and test procedure should be carried out to achieve a first time fix.