I'm having trouble finding parts and info for this car... (1975 300D, 115 chassis, 117.983 motor, automatic). The glowplugs dont operate, at least the indicator doesnt come on , and it takes a good few seconds of cranking to get it to fire up. This glowplug system is different than my 82 240D. The parts suppliers I've been able to find arent listing anything besides glowplugs for this... Also, it smokes pretty bad on startup and until it warms up. (white smoke, no antifreeze smell, and no water mixed with oil when I look at dipstick).
It runs well, has a few vacuum lines broke, (shut-off switch doesnt work, tranny shifts late, and brakes are heavy).
I would like to find a Bentley Manual for this thing, or even a Haynes.