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I just removed one leaking injector from my 2.2 C8 .......the copper washer was not sealing allowing exhaust fumes into the car and also allowing the crud of black death to grow all over the top of the injector. I own my own engineering business and am fairly good on the spanners so I started . A while ago I scrapped one of these that the guy could not afford to fix after another garage had mutilated 2 injectors on so had the opportunity to have a look at one that was already stripped back a bit.
If you chip all the black crust off as well as possible and can find the clamp nuts and remove them with plenty of light so you can see what your up to youll notice that the clamp studs have got a torx drive on the top of them,I managed to use these studs as a puller to draw the injector out about an inch by winding them a fraction at a time alternately. Once the injector is out as far as it will pull with the stud ( the studs by the way are shouldered and this is what pushes the back of the clamp to drive theinjector out) flood around the injector with light oil then start the studs back into their threads if you wound them all the way out VERY CAREFULLY! WE DONT WANT TO b***** THESE THREADS UP AT ANY POINT! .......wind them down using the torx drive and then start to draw the injector back down into its hole very carefully with the clamp nuts a small amount on each side so your pulling down evenly.
Doing this will introduce oil into the cavity of snot and crust that is binding the injector. I did mine up and down four times before I could get an adjustable spanner around the body to start working it in a twisting motion to pull it free.
The biggest factor in this is to be extremely patient and be prepared to have back ache and get covered in s"""t. I have seen many of these get scrapped because garages break parts that involve the engine having to come out. If you mutilate the anchor studs you have wrecked it,but if you are confident and have time..... even if you do break it your not going to have to pay a garage for the privelege of letting an impatient mechanic break it for you.
It took me five hours to turf mine out....it was as siezed as any other I have seen,about 45 minutes to put it back including the blower ducting and new cabin filter,the washer was nothing because I have got a box of them and the injector was not damaged at all ,so it can be done it comes down to time and patience.
Also,the last snapped cam belt I saw on an 807 was caused by the auxilliary belt breaking.......ironic how a car well within its cam belt service intervall can be serviced the month before and then die of engine failure because the auxilliary belt was not replaced on the service.
Good luck J
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