jannovak

Hello guys I observe my car's weird behavior. I tried to find it here at the forum but nothing is similar to this one. When engine is at idle and I press an acceleration pedal just a little bit, sometimes it chokes and even want to stall. When I add more gas, engine goes to revs without any problems. This happens when engine is either cold or at operating temperature and this does not occure everytime. At the operating temperature, when I'm in a gear and completely release acc pedal (engine breaking), car starts to "pluck" when it comes to revs about 1500. Plucking also occurs when I go on a level road and I'm pressing acc pedal really small to keep constant speed. Once I press the pedal little bit more, plucking disappears. Other problem that occurs occationaly is when I change gear to neutral, revs drop too much below 500 and after that goes to idle. When engine is at the operating temperature, I can feel noticeable misfires. Beside that engine goes with no problems, there is no lack in power, consumption is normal and cold starts are not longer than they should be. I cleared throttle body and MAF sensor but that does not help. What would you recommend to look for? It looks like some stupid fault (vacuum leak etc.). What about fuel filter? Is it possible? I bought that car a month before without knowing any service history... Thank you very much for any idea or help :)