Greetings JMH,


I would say the reason your diesel isn't shutting down is either the injection pump shut-off valve is leaking not pulling a vacuum or your vacuum shut-off switch at the ignition key switch is clogged up not holding that vacuum when you turn the key to the off position. Do a search on shut-off valves as well as shut-off switch as I have made several posts on both when this problem happened to me. In either case the engine won't eventually shut off without the presence of vacuum to pull the IP to the no fuel position. Both parts can be bought from Fastlane quite cheap so I'd fix the problem instead of letting it run.


Charles

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"Tell me and I will listen, Teach me and I will learn, Show me and I will accomplish, Involve me and I will succeed."
'84 300SD 256,000 Gold on Brown (Mileage Award)
'86 300E 246,000 Blue on Tan