1968 830 Diesel Comfort King Case-o-matic:
When the engine just starts to get warm - 30 or so seconds after starting it - coolant (cold) pushes out around the rad cap (new cap) and through the overflow tube uncontrolably. There is a bit of coolant getting into the oil as well. Previous owner took it to a shop and all they did was re-surface a head (which I am sure had nothing to do with the problem)
I assume it has a thermostat, but even if the thermostat was locked open or shut the coolant should still flow either way and not come out the top of the rad forcefully?
Re-assembled the head incorrectly? Engine sounds fine otherwise. At a loss.
Any ideas ? Thanks!