I have inspira manual
Recently i found abnormal noise, may pistons knocking or valve tappet.
Wonder other 1.8cc manual here have same
Drive at 4th gear at RPM3500, down shirt 3rd gear, press acceralate pedal from RPM2500, the abnormal noise occur.
I open the driver door windows.
You guys experience this or can try it out?

This noise/ sound usually can hear from wira or iswara at same drive condition.

Thanks to share