ZX2 of 2003 year had strong engine vibration when idle.
I changed all engine mounts (three of them were dead), spark plugs, spark plug wires, fuel filter and cleaned fuel system. Vibration became less but it is still present when Idle.
Note: When I switch on conditioner then car starts vibrate and as result steering and front light vibrates too. Same result I can get if change transmission from Neutral to Drive and press break to prevent car moving.
If I switch conditioner on and change transmission from Neutral to Drive and press break then car "shaking" well it looks like massage chair.
Note: I do not have any vibration when engine RPM greater then 1100.
What going on with that car?