How do i clean a weber carb on a fiesta 1.1? do i remove it and soak it in carb cleaner for a little bit? or clean it still fixed to the car?

 

You can do either but you really need an airline and a blower attachment to do a proper job, does the carb look like this
http://cgi.ebay.co.uk/FORD-FIESTA-EN...item2556437767

 

Done properly it needs removing, and all stripping down, then leave to soak in thinners in a tub overnight if you can, it is a MUST that you remove all items with rubber or plastic on them from carb, otherwise thinners will ruin them, this is mainly o rings and diaphragms.
Thinners will get it spotless, don't forget where everything goes!!
The trouble bit is normally dirt/crap in the float chamber, this makes the float valve jam open, flooding the float chamber and causing flooding rich running of the engine, to clean this out normally just invert the carb, remove float pivot pin, and then float then blow through all openings as said with air line.
tabetha