I recently replaced every gasket possible in my 7.3 idi and it was running perfect for about 2k miles. I started it up one day and all of a sudden, smoke went out my tailpipe and all of my coolant got sucked into the oil. Im hoping this isnt cavitation. I don’t know why it would be a head gasket considering i have studs installed. I dont see any external leaks either. Any ideas on what it could be, and easy tests for it?