And now are coming back the memories of flying the 182. From the POH (and a bit of memory) "Apply Carb Heat immediately prior to take off to clear any ice". The old 182 liked to ice up a bit.
That helped change my habit from "Carb heat during run ups to check it is working" to "Carb heat prior to take off, in case of ice"
PRE TAKE OFF -Monitor rpm whilst applying carby heat, if you get a slight drop followed by a raise in RPM you have ice, leave heat on until RPM stabilizes.
I know of someone who managed to stall an engine during ground running due to carb ice.