Hi Nazar,

Read up on the procedures people have written here as you found.

On glow plugs that have snapped on the inside, with the threaded part out of the head, you will have to drill and tap them. Use a section of threaded rod or an all thread bolt and nut screwed into the remains and then tighten the nut against something like a socket to pull it out.

If the glow plug has snapped on the outside, leaving the threaded part in the head, you will probably have to drill it progressively larger until the remains of the threads can be scratched out with a pick. If you ruin the threads, they can be replaced with a heli-coil or a time-sert.

When using a thread replacement, you have to be EXTREMELY careful to drill at the correct angle because the glow plug needs to align properly to seal.

__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250