Hi people! I bought a used Mazda 6 2008 1.8 Petrol (220,000 km) at the end of last year, and have run into this problem pretty much immediately after. I've noticed that at low rpm, my idle keeps oscillating and my engine stalls. Also, after this happens, when I try to accelerate, it's like the car doesn't respond properly and loses power.

I took it to a mechanic. They changed the spark plugs and cleaned the throttle with no result. The tester shows absolutely no error. The mechanic also tested the motor’s compression, and the results were great (12 bar).

I'm hoping some of you can give me some ideas on what to try next. I'm pretty much lost here and the mechanic doesn't seem to know what to try next.