Bummer, it sounds like you have a blown head gasket. but to be sure here is a guide to help confirm the issue:
If positive here are instruction and guides on how to replace the head gasket. Start by disconnecting the battery and draining the coolant. Also, you will need to have the heads resurfaced below you put it back together.
Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
Images (Click to enlarge)
Wednesday, January 16th, 2019 AT 4:49 PM