I probably left it closed for a couple of minutes while I was searching for the vacuum leak. I'm used to the shutoff lever on my '82 that shuts the engine down immediately. How long does the fuel shutoff normally take to kill the engine?

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'82 300D - Light Ivory, 2nd Owner (Back in the wind April 2013!)

'95 E300D - White, grey interior. (Suffering from stuck/broken glow plugs)

Deuteronomy 22:4-
"Thou shalt not see thy brother's ass or his ox fall down by the way, and hide thyself from them: thou shalt surely help him to lift them up again."