have system pressure tested to observe leak
I would check the hoses leading into your radiator, and also the overflow for antifreeze. If that is not the problem, it could be your heater core. Your heater core might be leaking, you might have a hose leaking
Where is it leaking? That pressure test sounds funny, why would you pressurize only the pump and radiator? If you are leaking coolant outside the engine, locate the source. If you are losing it from the radiator but cannot find a puddle suspect a head gasket problem. Check the Radiator cap first, if it is bad high pressure coolant will travel back to the overflow bottle.
It depends on if you see the antifreeze leaking or it is just disappearing. If it is just disappearing then a bad head gasket or cracked head may be the problem. The smoking could actually be vaporized antifreeze. If that is the case don't run it until you can get it fixed.
If your radiator is leaking then you will need to replace it. Additionally, if you find that your car is constantly running hot you will need a new radiator.
ac or exhuast
It could be caused by a defective pressure cap on the radiator cooling system.
Antifreeze is green in color and is leaking from your radiator .
Leaking radiator? Leaking or loose radiator hose?
I had a similar problem and ended up replacing both the lines and the radiator.
ah.......radiator??
These two cooling system conditions are more than likely related. The cooling system is closed and not supposed to leak. Sources of leaks include hoses, clamps, radiator and or the heater core.
The transmission cooler (possibly part of the radiator) has failed.
then you should have your radiator flushed because you have rust in it. FYI: antifreeze can strip the paint off of your it you spill it. Also, you may need to replace your radiator if the antifreeze is leaking, it may be through a rusted/corroded portion of the radiator.
Call Around; Find A Radiator Shop or A Mechanic That Can Pressure Test Your Radiator. This Should Help
The only way to find out is to have a look it could be anything.
check your radiator hoses and change gaskets
There are several reason why a car might lose antifreeze. The water pump might be bad, one of the radiator hoses could be leaking, the radiator could have a leak, a freeze plug could be leaking, or it could have a blown head gasket.