Date registered: Oct 2008
Vehicle: 1959 190, 1961 190SL, 1967 250SE 4Spd, 1968 220D 4spd
Mentioned: 1 Post(s)
Quoted: 5 Post(s)
W115 With M121 and Stromberg Carburetor
A guy I know has a 115 with an M121 (220) and the Stromberg carburetor. I've seen thousands of Mercs over the years, never come across one of these, and after some research, i'm beginning to understand why. Most retired Benz guys sigh after hearing about this oil-bathed stromberg, and the usual response is something like "tell him to look for another car"
Are there any alternatives to the Stromberg? The M121 is such a great engine, and the late 50s single solex was wonderful. In my opinion the thermostatic idle/mixture BS they started putting on carb'd benzes really put a dent in their longevity and reliability.
The issue with the car in question is that it will not accelerate. It will start, barely, and only with foot fully on the throttle. It feels like the accelerator pump on the carb (if it even has one?) has a torn diaphragm. The car has decent fuel pressure (using both the original mechanical, and an electric one I put in for diagnostic), proper spark, and good airflow (bypassed air filter housing entirely. I'd like to learn more about this stromberg if any posters have experience with it.