no question,rotten egg smell =running too rich.why was mixture fattened up? was it to cover a vacuum leak and gain a smooth idle?you need to lean it down go to indie with 5 gas analyser or some one with the use of inspection machine.

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David S Poole
European Performance
Dallas, TX
4696880422

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
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