Hi dear all sifu, I have a vios year 2012 NCP93 recently experience engine knocking issue usually during acceleration between 2000 rpm or higher sometime it sound "cluck" "cluck" "cluck" especially when I try push my pedal as fast or hard as I could. I ever sent to umw to check and the technician said is due to carbon build up can try decarnonise. He also mentioned my car use Timing chain to where he cant retard or adjust anything due to the use of timing chain.
After decarnonise it goes pretty well for few weeks without any knocking sound but the knocking sound does come back after few weeks. Before sent to umw I already use fuel ron97 Shell but still same. Does changing timing chain will help?
Engine Knocking Sound, Engine Knocks when go over ramp