W123, SVO/WVO parts

1977 300D coolant leak

Last year my parents bought me a 1977 240d with a 300d engine. I love the car because of its old style and drove it for about 4 months before pools of coolant started to appear under my car. I am wanting to fix my car now that my dad recently passed away and i need to know if anyone could help me by finding out what the cause is. I have had people tell me its a freeze plug behind the engine. All can tell is that its leaking between the engine and transmission. if anyone could answer this for me i would appreciate it and i would know that i must purchase a freeze plug.

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617 Diesel Injector Lapping Procedure

As I continue my quest for perfect 617 Diesel Injectors & truth I have just learned today that I need to have the internal surfaces of my injectors lapped to remove grime & build-up. . .

Is this something I can do myself (lapping the surfaces) if I take on the task of re-building my 617 injectors w/new Monark nozzles?

How would I do this?

thank you & Happy New Year,

Kieran-

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1980 240DD Transmission Rough at Start

I have a 1980 240D sedan with an automatic transmission. When I start the car and drive it first thing in the morning, the transmission shift from first to second gear is rough, it snaps my head when it shifts! However, once I have been driving it for about 15- 20 minutes and it's warmed up, the shifting from first to second is much smoother and about the same for the other gears. Is my transmission having a problem, or is this typical for a car of this age?

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