w124 6 cyl spark plug removal hiccup

[Dexter]

Hi all

Got my 6 new plugs and removed cover which revealed 6 plugs, 3 of which have a square block above them with two electrical connections on them. The squares seem to be screwed down but when I took a screwdriver to the little brass grub screws (bottom right) that secure them the screw heads broke ! presumably they had become brittle with the heat.

Wondered if anyone had encountered this when undertaking what is normally a straightforward task.

Did I go about this the right way ? and what is the solution from this point

Grateful

 

[turnipsock]

You just pull off the big square things. It looks like the screws on the corners do something, but they don't stop you pulling the coils off.

It takes quite a pull to get the coils off, but it's a straight up pull.

 

[turnipsock]

Here's a picture of my broken loom that might help you...

 

[Dexter]

Thanks again Turnipsock!

Your picture was indeed helpful. Bit concerned that pulling off coil will damage thread where screw held down and I will not be able to get the coil to sit securely thereafter. Might try and drill out the dmaged screws anti clockwise so that I might find an odd grub screw to do the job going forward.