Maxbumpo, what was actually binding the glow plugs? Is it carbon after the glow plug flare seal (in the combustion area) or before the flare (in the glow plug threads)? Or both? If before the flare in the threads, it would suggest the flare was not sealing properly and allowed carbon to pack the threads.

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85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked