Nothing
there is no drive cycle for a catalytic converter it could be plugged up....
You replace it.
The life of your catalytic converter depends on the condition of the engine and the fuel you're using. If the fuel has the wrong additives, the catalytic converter can become plugged up. If the engine burns oil the oil vapor will build up on the catalytic converter and it can become plugged. Otherwise, if the catalytic converter isn't plugged, don't replace it.
Catalytic converter plugged?
Yes, if it is plugged the exhaust can't get out of the engine.
Catalytic converter plugged.
I dont believe it will if the converter is cracked but if the converter is plugged it definetly will.
Plugged fuel/air filter? Plugged catalytic converter?
Could be a plugged catalytic converter, plugged fuel filter,
Check that catalytic converter is not plugged
Plugged fuel filter? Plugged air filter? Plugged catalytic converter?
Plugged air/fuel filter? Plugged catalytic converter?