Clunker:

The injector is held down by a "fork" with a single screw into the manifold. You can tighten this if loose -- 10 mm, I think. Have a care, the manifold is aluminum.

Make very sure the injector body is actually cracked and leaking. I'd suspect the hose or the pressure ring first rather than the injector, although they DO leak (my sister sold her 1973 VW Fastback because of leaking injectors).

There are two seals -- one in the mainfold (small mushroom like thing, fits on the nozzle) and one on the body, held on by a circlip.

How much fuel do you have there? A leaking seal will slow very little leakage -- mostly cause trouble from air leaks into the manifold instead.

You can replace a single injector. They are about $75 each, I think (may be more) -- you will have to remove the fuel line (careful, it stays pressurized), then take all the injectors on one side out along with the rail after unplugging them. Loosen the hose clamps, take injector off, put new injector on, then reverse process. Not hard, better (and cheaper) than a tow....!

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!