Re: head gasket probs maybe?
Reply #1 –
When I had my pump replaced the gauge read a bit higher too, likely because it finally had the proper antifreeze mix, and was up to normal pressure instead of losing all the pressure out the pump's weep hole.
After. While running the pressure in the cylinder(s) gets through the head gasket into the cooling jacket and forces the coolant out, like blowing through the straw into your milkshake.