Random jerking or shockwaves f30 320i 2013

mykmafu

New member
My car has this random jerking effect while in motion, it also feels like a shockwave when the car is idling while stationery or when moving slowly. Took it to my mechanic, no error codes, I used my Carly app and still no error codes. No warning lights on the dashboard either. Had recently taken the car for timing chain repairs. The mechanic claimed that he changed 2 injectors( 🤔car was not misfiring when timing chain broke)
Does anyone know what might be the cause of this random jerking effect or shockwaves?
Problem kind of disappeared when I used injector cleaner. I’ve been suspecting dirty fuel, or dirty injectors. Someone also mentioned that it might be a CAT problem.
 
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