It is not necessary to bleed the coolant system. If you mean "drain" the system, there is usually a plastic plug on the radiator or, you can pull the lower radiator hose off.
If by water you mean engine coolant, yes. Loss of coolant, antifreeze, is a major cause of overheating.
It's no cage it means either low coolant or to have the coolant system checked
There's a leak somewhere in your coolant system. Check the radiator and the hoses.
The cooling system is a closed system. If there is smoke (probably steam) there must be a leak in the cooling system somewhere.
Then you need to "accidentally" remove it ... pronto, which may mean flushing out the entire coolant system if the engine has been run.
It means that you have a coolant leak. You need to have the system pressure tested for leaks.
Not necessarily have system pressure tested to determine the source of the leak
You have a coolant leak.You have a coolant leak.
The coolant level is low.The coolant level is low.
You mean Soul Silver? Silver was the old game and I can't help you with that. However, in Soul Silver you can give shards to the guy in Violet or Fuschia city and he will give you something for it.
If by "bleed" you mean drain, disconnect the lower of the two hoses (do not confuse with the pipes from the AC evaporator) and drain the coolant into a bucket. If you are flushing the system (which you should if you are changing the coolant anyway), dont bother draining it, most of the coolant will flow out anyway, just do the coolant flush and fill from the radiator.