So I cracked my radiator 3days ago and so now it sounds like its choking. 3 moths ago I had blown the head gasket and had it replaced I didn't change out the radiator, but was told it was gona crack soon. Person who's gona install radiator tells me water got in the oil. And that's why it sounds like its choking. I'm thinking he must first put in new radiator then top it with antifreeze and then try to start it. Or why won't it start? He trying to start it with the old cracked radiator still in the car.