I'll check it out this weekend. I have another head with hardened valve
seats and a brand new copper head gasket that I wanted to put in
eventually anyway ;-)
> Leak down test is good. But, you still might have a leaking head
> gasket. Cylinder operating pressures are much higher than any
> leakdown test. You could be leaking pressure into the cooling system,
> forcing the fluid out.
> Radiator cap could be bad. A new one is a cheap way to find out.
> The expansion tank should get fluid from the radiator when the fluid
> expands. As it cools, the system should suck the coolant back from
> the expansion tank.
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