Radiator Cap

[Johnny]

John Hess wrote:
> 
> I'll try that one...
> 
> How about, when you remove the thermostat, the pressure of the system
> decreases, the boiling temperature decreases, the coolant boils at a
> lower temperature (both in the cooling system and in the overflow -
> where available- catch tank), the mass of the water in the cooling
> system decreases, decreasing the pressure further, causing further loss
> of coolant.  The result...overheating!

Why so you assume that when you remove the thermostat, the pressure in
the system is reduced?

-j-