Carburettors

Hi guys I've just recently updated all my ignition system on my landy due to starting issues. Now she starts much better. But she still not quite happy when running she sounds like she splutters at times. Like she's struggling for fuel, I know she is running really rich at the moment due to petrol smell and black soot. The carburettor on my landy series 3 is a Weber carb. I've been looking online and all I can see is it says it should be a zenith carb I'm kinda confused as to which should be on my landy. I'm wondering?
A. Does the carburettor need a good service to stop the splutter.
B. Is the right carburettor on my engine to start with and does it matter.
C. Is it possibly something else

My landy spec is:-

Series 3 109
1982
2286cc 4 cylinder
5 bearing 8.1 compression
Engine no. 361213821
Vin No. Sallbcah1aa174348

Originally your engine would have had a Zenith carb on but Weber's were a common replacement - allegedly giving better economy but some say that was only because they 'strangled' the engine a bit. I have one fitted to my lightweight and I find it runs OK.
As for your spluttering, a good clean/service of the carb probably wouldn't go amiss - it certainly wouldn't do it any harm and it would rule out the carb as a problem if the spluttering persists. I imagine you can buy a service kit for your carb containing, seals and gaskets etc make sure its cleaned and reassembled in a clean environment, putting sh*te into a carb is never a good idea as they are quite delicate instruments

Once you've serviced the carb, make sure a good supply of fuel is getting to it, the fuel pump could be on the way out, or your in line fuel filter (if fitted) could be blocked.

As posted it’s an aftermarket part. I have one too. Online you’ll find plenty of instructions for maintenance to download. Unless you buy a refurbish kit which isn’t expensive there are only two screws. Suggest you remove the idle jet screw which is the brass flathead facing into the engine. Careful unscrewing not to damage the O ring. Clean with a tissue or clean lint free rag and blow through the jet to make sure you get any crude out. The standard jet should be stamped 0.50. Job done just screw back. The mixture screw is round facing towards the bulkhead. If you’ve got instructions follow to get a “baseline “, which means screw it all the way in and then unscrew for 1 and a half turns. Run the engine to see what the tick over is like. If too Low screw out in half turns and too high the reverse.

The Gunson Colortune is a great diy petrol tuning aid. It is a temporary replacement glass spark plug that allows you to see the combustion in the cylinder as it happens and you set the carb by the colour you see. Simple and effective just follow the instructions.