International 7.3 idi engine teardown

Tearing down the 7.3 idi in my 1987 International S1900 lopro looking for the issue that is causing the bubbling in the cooling system.
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Cameras used:
GoPro Hero 10 Black
iPhone 13 Pro Max
Drone:
DJI Mini 3 Pro
Keywords:
International
Truck
Diesel
DIY
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Tear down
Over my head
Can I fix it
Fingers crossed
Outdoor
Shade-tree mechanic
Cavitation
Blown head gasket
Cracked head
Tear down
Indirect injection
Ford
F250
F350
4x4
Roll coal
Non turbo
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Eastern Kentucky
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