W201 carb engine running problems

[Df1]

I have a 190 carburettor manual model.

The engine is not idling smoothly and is fairly lumpy.
When I accelerate hard sometimes it gives a few misses then takes off.

I have to date had the carb overhauled, replaced plugs, plug leads, distributor cap, engine mountings (thought it might be causing the lumpiness).

Any suggestions appreciated.

 

[martyz]

Air filter,restricted exhaust/cat(if fitted) faulty ignition module/manifold to module vac hose? Just a process of elimination.If yours is quite an early model this might not be relevant though as my experience is of the later injected facelift models.

 

[Df1]

Thanks for the pointers.

It's an early (1987) model, so no cat.

So I guess a check of all vacuum hoses then ?

 

[martyz]

Yes,the fuel supply (filter/delivery pressure)may be worth investigating aswell.