Small leak in my radiator over this last summer, so i just kept a gallon of water in the car and filled it when low. (So no antifreeze at all). Winter- water pump frozen solid while driving= water FLOWING out of timing belt cover. And engine timing knocked outa the park. My diagnosis- may need new water pump, definitely water pump gasket and timing belt.
It still runs, but rough. No white smoke.
My question: is it still possible i blew a head gasket, even with no smoke??