Fuel injected can result in false high readings. Make a jamb rod cut to the right maximum length instead of a socket to insure there is no fuel injected. I'll try to get you a pic soon.

One mod before you put the glow plug wires back on for the hot test is to make the ring lugs into spade lugs with a pair of dikes. This will allow taking off the wires without removing the nuts (just loosen them) saving time, and the engine is hotter.

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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