1984 300d,, wont shut off I have to use the manual shut off.

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1984300D 190,000 miles used everyday

Probably a vacuum leak. Try blocking off the lines to the door locks and the climate control to isolate the leak.

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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

300duser,

Remove the opposite end of the brown vacuum line, end not plugged into the stop device on the injection pump, and suck on it when engine is idling. If the engine stops, the problem is somewhere else in the vacuum system. If the engine does not stop when sucking, the vacuum stop device is defective.

P E H

I have had that problem a couple of times. I lubbed the joints of the linkages & my problem went away after some long drives. It's not always a vac problem.

Peace

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bznupe30
85 300d-t
97 legacy gt sw