"My problem it's that my engine not allow me to accelerate normally."

Sven, the usual cause of poor acceleration is lack of fuel.
(Although at current prices that may be a good thing!)

Assuming the problem occurs when the engine is no longer cold, some possibilities to check:

Dirty fuel filter or filters.

Dirty engine air filter element.

Weak fuel pump - insufficient fuel pressure.

Dirty carburetor - dirt in the bowl so the float cannot move sufficiently to open the fuel inlet valve.

Another possibility is that the ignition timing is incorrect - badly retarded.

If the problem occurs only when the engine is cold, the carburetor's choke is not working - stuck open. Or the engine's thermostat is stuck open so the engine is running below its 80 degree C operating temperature.

Of, course if someone has recently worked on this motor he may have done something to cause the problem. Or, if the problem occurred suddenly, it could be due to bad fuel.

Finally, Haynes manuals attempt to describe too many models, in my opinion, and so do a poor job when an owner needs information on HIS car!

I hope these suggestions help you find and fix the problem.

Tom
I

Hi Sven,

I had the exact same car, a white 1988 200 automatic with a Pierburg
carburettor. I bought it in june only to discover that it stalled after
a cold start whenever I put it in 'D'. My first suspect was the choke
but that seemed to work OK.

It went back to the seller three times who had it 'repaired' by his
usual garage twice. Both times it seemed better at first, but
deteriorated rapidly after a few days. The third time they took it to an
official MB dealer with the same results.

At the dealer's they apparently did some kind of bypass that was a
standard fix (recall?) for these engines. Unfortunaly that must have
been a fix for some other problem because my problem remained.

I gave up 3 weeks ago and took it back to the seller and traded it for a
250D with 50 Kmiles on it. Now I'm happy ;)

I understand that the Pierburg is an electronically controlled
carburettor of the very last generation. Maybe I should have heeded the
advice in the 'Kaufberatung' I found, that said:

"200

Dieser Vergasermotor leistete 105 PS bei 5500 U/min und ein maximales
Drehmoment von 157 NM bei 3000 U/min und wurde später mit Beginn der 2.
Serie vom 200E abgelöst. Unter Umständen könnte sich hier das Fehlen
kompetenter Mechaniker bezüglich der Vergaserwartung und Einstellung
negativ bemerkbar machen, da diese Technik eigentlich schon seit vielen
Jahren nicht mehr verbaut wird und im Defektfall Probleme bereiten könnte."

http://bilder22.parsimony.net/forum43054/kauf/kauf.htm

Exectly my experience. In my case the car drove surprisingly well when
warm, but no mechanic seemed to know enough about this model to be able
to fix this (probably) minor problem.

I hope you'll be able to find a way to fix it, though!

Ximinez