I have only had this car a couple of months and I have had problems with it starting and lurching upon acceleration when outside temp is cold . This car has the Zentih carbs, which I believe were slightly modified for the 1972 model. Is this correct? I took it to a Mercedes garage here in Oklahoma City, and it ran better for a couple of weeks. The main complaint is upon cold acceleration from stop, the car lurches and I can hear the carbs (or something) "backfiring", or spitting. It seems the more I step on the gas pedal, the less likely I am to go anywhere! If I try and quickly accelerate, the car just doesn't go, if I accelarate very slowly, I'm fine. Once I get past 10-20 mph, I don't notice any problems and once the car warms up, it runs better. I have been reading about these carbs and I know they are complicated, but is there something I can do here? Does anyone know a good Merceds mechanic in OKC? Thanks.

Ryan

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RG Newell

1984 300D
1972 250
1986 560SL
1991 300CE