I pulled up at work Sat. and went to shut the car off. It wouldn't. So I got
out opened the hood and used the stop lever. No big deal. I thought I'd get out the mighty-vac when I got home and find the vacuum leak. When I got
home the car shut down fine. I spent the afternoon hunting for a leak to no avail. It's now Monday and everything is as it should be still. Any ideas?

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85 300TD FED-Daily
84 300SD-Wife's
86 XJS-Sunday
66 GMC-Work- Given to my stepson
83 BMW Airhead- Given to my stepson

The hose that is attached to the shutoff diaphragm can develop cracks due to the heat and you'll get intermittent performance.

Any hose under the hood can suffer from the same malady and finding it is a PITA.

My TD does that periodically. It's done it maybe 4 times in my 8(?) years of ownership. I know it's about to happen when the downshifts get harsh. Have no idea what it is. Everytime it has happened, problem has disappeared the next time I start it. I figure maybe a sticky check valve in the pump? I say don't worry about it until it happens again and doesn't go away.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13