Take the 2-minute tour ×
Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. It's 100% free, no registration required.

I have a weird problem with the engine of my W123 (the engine is gasoline, 2L, 80kW with a Stromberg 175CDT carb).

When the engine is cold (less than ~50C or so), it acts weird. When I want to accelerate from slow speeds (first, second gear) and press the accelerator, the car delays a second or two and then jumps forward. This happens once or twice and then does not happen until I turn the engine off and then start it again.

EDIT: As it is now much colder outside, I think I have found the actual problem symptom. When I start the engine, while it is cold, if I quickly press the accelerator (without the car being in gear), the engine just stops. After a minute or so of warming up it works properly.

share|improve this question

2 Answers 2

http://www.autozone.com/autozone/repairguides/Mercedes-Coupes-Sedans-Wagons-1974-1984-Repair-Guide/Carbureted-Fuel-System/Carburetors/_/P-0900c152800ae88c . Because of the age of the vehicle you will be unlikely to find someone to answer your question fully. I have not even seen a Stromberg carb for many years. The link above will bring up a good guide to enable you to check your carb out.

share|improve this answer

Most likely your carb needs some cleaning. These older style carbs has a few "holes" which could be stuck from like rust from tank.

Remove the carb and carefully clean it. I would also add/replace the fuel filter.

You could use etil alcohol for cleaning.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.