I finally got a chance to get back to working on this problem.

Here's the answers to Beagle's questions about injectors. They were sent out to a highly recommended diesel shop and rebuilt. All I know is that they did replace the nozzles and set the opening pressures. No mention of the leak down rate when they were returned. I don't suspect any poblem with settle in time as they have been in the car for at least 3500 miles.

There is no damper in the linkage and springs are returning the linkage to the stop screws.

I am wondering if the diapham in the injector pump is a problem. This pump has a pnuematic governer so I suspect the vacuum at the throttle plate may come into play with idle control. I disconnected the line at the manifold and tried to pull a vacuum with a hand pump. The reading never got higher than 12" of Hg and leaked back to zero within 5 second after I stopped pumping. To me this looks like the diaphram is leaking. Is this a leaker or is this normal? Is this a possible cause for rough idle if this is leaking at the diaphram?