Update on car

Sooo...
Went to my mechanic-electric with my few questions about my possible reason for my problem with car - lambda probe, carburetor, hill brake in exhaust system - don't even know how it works, but I have such thing in my exhaust system :D
Checked a little bit on everything and like always - car is running excelent when in service. But lambda probe is ok, yea, I could change it, if needed, but i can drive with this one also, no big deal.
Hill brake - ok. hmm... what's left? Carburetor - looked a little bit more on that, looks like everything works as it should from outside - what's inside - don't know, he's not too good in mechanical things, but the other mechanic said - that's a carb, how many cars today have carbs on them? Only oldschools and old American muscle cars, new cars have injectors, turbos e.t.c. so he said that he knows also nothing about carbs, but possible reason for all the problems is a carb. Opportunities for fixing the problem? There are few - take off the carb myself, wash and clean it, oil it and put it back, drive and leave the car for unknown time at service - there are only 2 people who still works with carbs in Riga officially, buy a new carb for 100 $ or the last one, assuming that the problem is some dust in the carb - drive further and hope it will come out itself - not that good idea, but may work...
So it looks like I'll have some pretty rough weekend :D