I think you have answered your own question, they haven't got a clue...

Some garages are good for changing bulbs and some even struggle with that haha,

Anyway, did it go in to them running?

If so, have they fitted the correct injector?

Was it programmed to your car? You cant just change them and everything work.

I'm also sure on your engine type (Probably 651), once an injector has had diesel through it, you have to keep them upright even after being removed. If you accidently lay one down there is a process in Xentry to try and rescue it, but it doesn't always work!

What do you mean by re-pressuring the tank?

Also, they should be able to see the rail pressure and know if the high pressure pump is working correctly?

White smoke generally means coolant or condensation.

Black smoke is associated with over fuelling.

Injectors aren't uncommon, ask them for a copy of their diagnosis prints and post them here, might be able to help

 

Hi,

Thanks for your reply.
Yeh my car went in running with the engine management light on and blowing white smoke. It wasn't even running bad when it went in either.

I can only assume it was the right injector going off my registration plate.
This is what I'm thinking too, I don't think they've programmed it in after fitting it. They said there was air in the fuel system so they took the tank off and pressurised the tank again (I assume it's got to be highly pressurised due to the pump??)

I will ring the garage again and ask for the diagnostic prints and get them on here (if they have them)

It's a 2013 cdi 2.2 engine, when an injector is fitted, is it easy for the garage to reprogramme them?

 

To program they will need the correct hardware to do so, MB use Xentry Diagnosis but there are alternative aftermarket tools that will allow you to do so.

I still would love to know what they mean by pressurising the tank, what tank? The only tank I can think of is the fuel tank, which isn't sealed or as it was suppling fuel to the engine would implode under vacuum. So it can't be pressurised lol.

Have they tried re-fitting your old injector?

 

So the garage have said they've tried programming the injectors but didn't do anything.

Sorry, yes they meant the fuel tank.

They've said they've had the ECU reset by a specialist now so hopefully when they put it back together it'll be up and running.

No mention of supplying the diagnosis prints so I assume they don't have them.

Am I being fobbed off do you think?

 

Personally it definitely doesn't sound right,

You cant pressurise the fuel tank as it has a valve to allow it to breath, also even if you did pressurise the tank it wouldn't achieve anything at all for any fault apart from confirming if the purge was blocked.

Reset the ECU? How do you do that and why? Definitely a new one on me!

They said it was an injector fault.....

We don't need to read too much into this, they haven't got a clue haha...

I would ask them when it is likely to be fixed, and make sure you only pay the original estimate of repair unless you agreed to additional costs at any point.

Because I'm worried that your going to be paying for their misdiagnosis of time and parts as well third party costs by the sounds of it.

If they cant answer when it will be fixed its because they still don't know the fault or what they have done wrong..... It went in running and now doesn't..... See where I am going with this?

Then it might be worth mentioning that you want it to go to an MB dealer or independent as you need the vehicle back.....

 

Update...
So I've spoken to mercedes who has said pretty much the same as you.
When I said about the ECU being reset, mercedes didn't understand why they would want to do that.
So, having had the ECU supposedly reset, the car still doesn't start...the garage have now said the injectors are all stuck shut.
They have taken the car to another garage with the mercedes diagnostic software and they're saying the injector AMP is reading 40 which is double what it should be.
Another week on and I've still not heard anything.

Any more advice what this could now be?

 

No, they've now taken all the injectors out and taken them to a diesel specialist.

 

Hi all, just an update on this issue.
Basically, when the new injector was fitted the garage didn't have the right computer software to do the bleeding operation.
The issue has now been resolved and the car is now running....bill wise....they're not charging me for misdiagnosis thankfully otherwise they would have had a small claims open against them!

 

Thanks for the update, so you're all sorted now?

Yeah that makes sense and I had figured out the original garage didn't have a clue haha.....

 

All sorted now. Thanks for your help and advice.

Yes. No clue whatsoever lol

 

Hi,
My 2013 A220 went in to the garage running but blowing out white smoke when accelerated more than half way and the exhaust having fuel in.
The garage said it was no.2 injector so they replaced this and then the car wouldn't start.
They then said it was the high pressure fuel pump but after repressurising the tank they said it wasn't that (they were going to order the £425 part but I said no as I didn't believe this would be the problem)
Now they're saying all the injectors won't open and it's an ECU fault. They have sent it away to a specialist to be tested.
I personally don't think the garage know what they're doing.
Has anyone else had this problem before that can shed some light on what could be wrong with my car please?
I'm losing the will to live now and getting very frustrated with the garage.
Any advise will be much appreciated on the piezo injector.
Thank you 😊

Sounds like the garage is just guessing. White smoke with fuel in the exhaust is usually from over-fuelling or an injector stuck open, not the pump straight away. On these engines, injectors also need coding to the ECU – if they didn’t do that, it can stop the car starting. If they now say “all injectors won’t open,” that could be a wiring/connector issue, fuel rail pressure sensor/regulator fault, or rarely the ECU itself. I’d ask for the exact fault codes and live data before agreeing to anything else. If they can’t show you that, I’d take it to a proper diesel specialist.