Cost to re seal a cdi injector

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amazighman

Active Member
Joined
Apr 22, 2016
Messages
747
Car
CLK 430
Good evening.

I have got this issue with one injector or maybe more that started to leak, at least one i can see it bubbling with some carbon around it.

AFAIK the previous owner had the seals replaced on injector 1 and 2 but now number 2 is definitely failing again.

I rang few diesel specialists around Tamworth and some wanted 200 quid claiming that the injector will have to be refurbished ( which i do not believe)
I still think that they are overcharging for what is an easy repair to pull out an injector and replace a copper seal with some seat and bolt hole thread cleaning.

I could do it myself but not sure wether the previous specialist who did the repair may have used a helicoil or timesert and i really dont want to end up not being able to bolt down the new injector.

Any advice is welcome with specialist recommendations / prices from around the midlands

Regards
 
Which model is it? Obviously not the CLK in your profile as it is a petrol

£200 is extortionate and no it doesn't require a refurb unless they have tested it and it is out of tolerance
 
Have you ever tried removing an injector that is stuck in? A few years ago 1 morning at work i had an injector to remove that was leaking worked the whole day trying to remove it with it budging, even got the engine crane and lifted the front of the car off the ground suspended by the injector, came in the next day and it was still like that! In the end we had to get a specialist company come in and do it, they drilled right down through the centre of the injector to remove it, there was bracing chains and brackets bolted everywhere onto the engine to use this custom made 50t hydraulic puller to pull it out, that company was at it for at least 4 hours removing it. You make think “oh its only an injector” but dont be fooled by only a “simple” job
 
The car is c320 cdi w210.

The injectors were removed 2 or 3 times before so i dont think they are stuck if they have been removed quite a few times in the life of the car.

I dont think it is 200 quid job if the injectors come out easy.it is only a copper seal and a bolt.
I was thinking maybe 1 hour or so labour plus parts.
As soon as you mention diesel injector the garages without hesitation quote 200 pounds or more without even saying if it come off easy or not
Anyone knows the average rate for this kinda job?
 
'The injectors were removed 3 or 4 times before..' Before what ?? The seals and bolts are a few quid, but if your engine is suffering 'Black death' it could easily write the car off.

More detail required.
 
By the way, Mercedes Benz have a pneumatic slide hammer(probably costing thousands ££) to remove these injectors just to replace a 50 pence copper seal ring. Once they start leaking , if not caught very early, it is a real mission to get them out. Sometimes ending up with cylinder head removal.
 
'The injectors were removed 3 or 4 times before..' Before what ?? The seals and bolts are a few quid, but if your engine is suffering 'Black death' it could easily write the car off.

More detail required.

All i know is that the previous owner had the injectors re sealed with new copper washers and bolts 2 -3 times during his ownership of the car (12 years).
There is no black messy gunk yet as i took the engine covers off and i can see injector number 2 is bubbling so obviously the seal has failed.
 
By the way, Mercedes Benz have a pneumatic slide hammer(probably costing thousands ££) to remove these injectors just to replace a 50 pence copper seal ring. Once they start leaking , if not caught very early, it is a real mission to get them out. Sometimes ending up with cylinder head removal.

There’s a manual one which does the same thing too for less than £100, obviously it take a lot longer ;)
 
How many miles does it have on it ? The previous owner has had this work done 2 or 3 times during his ownership ??? by whom ? Doing this job is a once in the car's lifetime deal. Black Death approaches at about 100000 miles and then you fix it properly and that's that.
 
I've pulled all six out of a cold OM613, without special tools just mole grips.
On another 613, in the early stages of BD on two cyls, they came out quite easily when hot.
 
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The car has ,wait for it 250k .

I just double checked the paperwork one injector was done 12 years ago other two 2 years ago both by a Merc specialist and by the looks of it they charged 80 quid to remove and re seal the injectors.

The can runs and drives fine with good power...my biggest worry is that if the injector bolt hole thread have been helicoiled or tapped i might not be able to bolt them down .
 
The car has ,wait for it 250k .

My E320cdi has 254K on it now. All 6 Injectors were resealed by p/o at around 200K iirc I think it cost £95. No leaks.
 
95 quid each or for the 6 of them?

All 6, Im guessing probably £70 labour £25 for the seals. I’ll find the reciept and confirm later! :)
 
DIY for 20 quid.
Then you'll know that the injector seats and the stretch bolt threads are properly cleaned.
 
Take out the latest one first;(it should not have tightened up in two years and will give you confidence to do the older one)
clean the seat gently with 400 grade paper-I attach some to the end of an old lapping stick-and having cleaned up everything else, especially the bottom of the bolt hole, use Honda copper washers and you should not have any problems
 

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