Rio 1.3 Petrol 2000. Cyl 2 misfire

[RobOneStop]

in that case i would be inclined
to change plug from No2 to confirm (new plug is ok) if miss follows THAT plug there is your answer
if the miss stays with No 2 then may be worth looking at valves
Autodata lists your as hydraulic tappets 
also as doc says look at wave form for coil 

[amechs]

A bad coil supply might look something like this.

[RobOneStop]

don't rule out valves leaking either