We checked and rechecked the fault codes--got 6 (idle speed control inop.) and 7 (ignition system failure). Couldn't see any sparks in the dark (confirming what someone wrote me--thanks!). I tried to find relevant information on the Benz 124 CD without luck. I forgot to mention that I washed the engine (mainly its underside) a month ago to remove widespread oil (apparently leaking from the timing chain cover--front right of the engine).

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TomO
94 E320 Wagon, 170k, totalled in 2006
2002 BMW 525i Wagon, 75k
1991 BMW 318is (two of 'em)