A bad radiator is a radiator that is leaking or clogged. If you are loosing coolant then you have a leak that should be easy to find if the leak is at the radiator. If it is clogged your engine will overheat.
Find leak, repair/replace cause.
Smoke from the radiator would be do to a leak evaporating off of it. Find the leak repair or replace necessary parts.
If the radiator was not fitted in properly or the pipes were not attached correctly, the radiator would leak.
First, you have to FIND the leak. It can be a hose, the water pump, the radiator, head gasket, radiator cap... let me know what you find, and if you can't figure out what to do, we'll talk.
a hose or radiator may be broken. check your hoses and radiator. where is leak coming from?? front, right?? find general area and continue from there
Unless your radiator has a leak, the radiator fluid stays in the radiator.
In order to stop leaks on a convertible it is important to find out the source of the leak. For example, if the leak is coming from the radiator the common fix for that is to have the radiator replaced. A certified mechanic would be able to locate the leak and provide a quote on the cost to fix the leak.
You can use Radiator Stop Leak as a quick temporary fix.
There may be a hole in the radiator?
There is a tool you can put in the inlet. When you apply pressure, a leak will show. If it is internal, the level of the fluid will go down.
Find the leak source and repair it. Usually the cause is cooler hoses.