Dump the injector cleaner into the tank, jumper the fuel pump relay, and let the pump run for an hour or so -- this will clean all the varnish out of the fuel distributor.

You can mess about with the injectors after doing this -- once you get them out, attach the lines to the fuel distributor so that they are not in the head -- use something to catch the gas -- and push down on the air flow plate. This will spray fuel out if the fuel pump relay is jumpered. All should produce a nice fog of fuel -- no half patterns, no solid sprays, etc. If it's safe, this will clean them up quite a bit, and let you know if they are good or not. They should also not drip more than a drop in 20 sec or so with the fuel pump off and residual pressure in the system.

However, it's just as easy to get them cleaned. I'd run the fuel pump with extra injector cleaner to clean out the FD, though. Do this before removing the injectors so you don't flush crud back in!

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!