I'm a newbie with a '74 280C with 113,000 original miles. The car is is pretty good shape but the price was right @ $1.00. The dealership that serviced this car finally could not look my mother in the eye when she brought the car in for service.

I went to drive it 220 miles home and found that it runs fine cold, idles a little rough when warm but runs incredibly rich on the highway. It smoked alot when there was a need to coast (as in downhill-definitely engine speed related) however, it did not happen all of the time. However, there was a TREMENDOUS plume of smoke on throttle tip in at speed. This was enough to create entire smoke screens that were visible for minutes after...

Is there a reasonably priced re-build kit for this (dreaded) Solex 4A1?
Is there a source of information that I can buy about the entire car? (I just drove it home with fouling plugs yesterday!)
Is there a Solex manual? The car is stock and used to run great, lots of power and very smooth. Now everything else is great except that I have become a gross polluter.

All responders- I am completely new to the world of MB's and it has been at least 15 years since my last carb rebuild, so....type slowly, use big letters and small words. I am not a dolt but could seem like it due to my complete lack of knowledge!

Thanks in advance!

Is that carb humor?

Dave