In a message dated 10/27/2005 9:38:56 PM Central Standard Time,
tr3driver@comcast.net writes:
> >It should stop leaking once it is full closed and
> >seated.
>
> Even fully closed, there is still cooling system pressure applied to the
> diaphragm (backwards through the heater core from the outlet), so it might
> still
> leak.
>
True, but if you unscrew the radiator cap (wait for the car to cool a bit)
there should be almost no residual pressure on the system and if you are using
the heater (and if you are near sea level) there should be no problems running
an unpressurized system.
Dave
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